Sunday, October 11, 2009

Towpath 2009


Towpath 2009 - Race Report


Today was the Towpath Marathon, Half-Marathon & 10K, which takes place in the Cuyahoga Valley National Park, which runs very close to our house. I did not know this, but this race is only one of two races taking place in a National Park.


Perfect weather for running (35F at start!) a bit chilly waiting for the awards.


This was the last test for me before Athens... I was aiming for 7:10 pace, but managed to clock 7 minute miles on the average, finishing 19th overall (out of almost 1000 runners!) with a time of 1:32:16, which is my 2nd fastest half after the "River Run" half last month.


My mile splits: 6:40, 6:54, 6:59, 6:53, 6:54, 7:00, 7:05, 7:03, 7:00, 7:07,7:13, 7:10, 7:07



My wife (waiting at the finish) reported that were a couple "old-looking guys" finishing ahead of me, so she was afraid I'd finish 4th again. But I finished 1st out of 42 in my age group, 5+ minutes ahead of the 2nd. The curse of the 4th place is finally broken!


Liz (wife) ran the 10K and finished 1st in her age group with 52:10.


A good day for both of us. I am especially happy that I can manage to run 7 minute miles in a half. The Towpath course is not a particularly fast one. It is flat (downhill in the first mile) but the crushed limestone has less friction, that leads to slower times.


The goal of 3:30 for the Athens Marathon appears to be within reach.

Sunday, September 27, 2009

The Day After

The day after the Akron marathon brought a nice surprise: MY LEGS ARE *** NOT *** HURTING!!!

So, now I get it: If you want your legs not to hurt, don’t run fast… That’s what my wife is doing :) Seriously, the person who said “It’s not the distance, it's the speed that kills” is absolutely right! After the Perfect 10 Miler 3 years ago when I set my present PR (6:51 pace), my legs were hurting for a couple of days. And it was only 10 miles. After my half marathon at 6:58 pace 3 weeks ago, my legs were hurting. But, running Akron at 8:20 pace does not produce pain (even though it felt hard).

I am happy for that. For a while I was worried that I pushed too hard in this marathon. The reason you should not run a marathon too close to an important race is that the recovery from the marathon can mess up your preparation for the race. This does not appear to be no problem for me now. I still have 5 weeks for Athens. My goal is 3:30, which is rather conservative but very reasonable considering the difficulty of the course.

Saturday, September 26, 2009

Akron Marathon 2009

A Training Run that Went Not So Well:

Since I am running a "serious", one-of-a-lifetime marathon in Athens, Greece, November 8th, I decided to treat the Akron marathon as a training run for the Athens Marathon.

Based on my good Spring Cleveland Marathon (3:22) and the good 20 mile Akron training run, 3 weeks ago (8:08 pace, finishing very strong), I decided to run the Akron marathon at 8:20 pace (3:40 finish).

Sounds easy, right?

WRONG!!! This was the hardest "training run" I've ever run!

I joined Elizabeth's pacing group (3:40 time). Elizabeth has the unique ability to chat during the entire marathon. As expected, she entertained us with her stories, and she also maintained a constant 8:20 min/mile pace, no matter what!

Do you ever have runs where you know from early on that this is not your best day? This rarely happens to me in a race, but it happened in this one. From the very beginning my legs and hips felt tight. The pace did not feel as easy as it should. I was thinking... if I feel like that in mile 10, how am I going to feel in mile 20?

After 11 miles running around the city, we entered the "Towpath" section, for 4 miles. At the exit of the towpath there is a 3 mile stretch of rolling hills at first and then mostly uphill. This is considered the hardest part of the race.

My original plan was to see how I felt at the top of the hill and maybe take off if I felt good. Elizabeth had us climb those hills at 8:20 pace. She warned us that this is a tough section and urged us to stay together and we will feel better when we get to the top. I managed to keep up myself and was surprised by how many did. But by the time I reached the top, my legs were very tired. There goes the "felt good" plan. At this point I realized that I will never feel good, so my best bet was to just keep up with the pace group.

I continued to follow the pace group until around mile 20. At this point, I started struggling and falling behind. Somehow, I managed to keep visual contact with the group. I was also mentally revising my final time... Maybe 3:45? It is a training run after all. If that was a regular training run, I would have stopped and walked at this point. But it is a marathon and my family will be waiting for me at the finish, expecting me at 3:40. So I had to keep going.

Only when we got to West Market Street I felt a bit better, knowing that it is downhill and only 2 miles to go.

My last two miles were at 8 min/mile pace, with 7:30 min/mile down on Main Street. I managed to catch up with Elizabeth at the final stretch before the finish. My official chip time: 3:38:53.

George Themelis #735
Brecksville, OH
Age: 50 Gender: M
Distance MAR
Clock Time 3:39:47
Chip Time 3:38:53
Overall Place 227 / 1331
Gender Place 196 / 930
Division Place 21 / 92
3 5M 00:28:17
9 2M 01:17:24
25K 02:09:52
30K 02:33:43
Pace 8:21

I am happy I finished strong, but I am also worried that this run felt worse than it should have. I cannot see how it would be possible to run this marathon any faster. I am actually surprised I managed 3:30 last year.

I now have to revise my plans for Athens. I was secretly hoping for something like 3:20 or better. Now, I will be happy with 3:30 in what is a difficult course (net elevation gain with long uphill sections).

Tuesday, September 15, 2009

Legs NOT hurting?

Please help resolve this on-going marital dispute!

What does it mean if your legs are NOT hurting after a hard race?

My legs always hurt after a race. Later the same day. Even more the next day. And the day after that, and so on. Sometimes I am even unable to run for a couple of days. This is especially true for long races, of course, but it also happens with short races, like a 5K. For example, after the Half Marathon on Sunday, my legs (quads, etc) were hurting later on Sunday, also on Monday, even today (Tuesday).


<--- Liz struggling at mile 13 the half. Yet, her legs did not hurt after the race. What gives?

On the other hand, my wife's legs NEVER hurt! I keep asking her after every race: "Do your legs hurt?" Her response: "No". "Not even a bit?", "Not at all".

"Then," I say "you did not try hard enough".

And there is where the argument starts. She insists that she ran as fast and as hard as possible, but still her legs do not hurt. How is this possible?

How is it possible to give 110% and not pay for it (with pain)?

I don't get it.

After I wrote this, and posted in a running email discussion list, most people said that they did not understand it either and offered explanations like "maybe she does not want to admit that she is hurting".

I had a long discussion with her. She says that her hips felt a bit tight and her Achilles tendon slightly tender (she had problems with both Achilles tendons and her hips in the past) but she has absolutely no muscle pain. If you hit my quads right now, I will jump up and screem. She feels nothing.

She also shows another unusual characteristic: Her training runs are even and fast. But her race pace drops and her final time in the race is slower than a training run!

Example: 2 weeks before her first half, she ran a training run at the Towpath, 13.2 miles at 9:32 fairly even pace. The Towpath is flat but slow due to less friction. This good training run led her to believe that she could achieve 2 hours in the race. Her target race pace was 9:20. Sounds possible, based on this training run.

In the actual race her mile splits were: 8:57, 8:55, 8:46, 9:04, 9:13, 9:22, 9:37, 9:33. Up to this point (first 8 miles) things look good. But look what happened next: 9:52, 10:03, 10:39, 10:34, 11:04.

Average pace = 9:45.

Most people (myself included) can race faster than they train. If I could cover the distance at 9:30 pace when training, then for sure I could do a 9:00 average pace in the race, most likely 8:30 (one minute faster in the race vs. training).

Maybe she started too fast and this caused the melt-down at the end (the last 11 min/mile is very uncharacteristic for her... even her slowest training miles are faster than 10:30 min/mile). She swears that the first miles did not feel fast and she has no explanation for the melt-down at the end. She likes to blame the hot weather & sun, but the weather was not hot and the course was well-shaded :)

So, she remains a mystery to me :)

Sunday, September 13, 2009

River Run Half - New PR!!



River Run Half Marathon Race Report:

It was a beautiful day for running :) About 60F degrees at the start, rising up to around 70F, and sunny. The River Run course is point-to-point and definitely fast. I would estimate that 80% is downhill. There are only a couple of mild inclines in the start and another one before mile 10. I felt I was running downhill most of the way. It is also well-shaded so I could not have asked for better running conditions.

<--- Happy with a new Half PR

This is the 4th time I am running the race and the 1st half for my wife. My best time in previous years in this course was 1:37:42 and my 1/2 Marathon PR from last year was 1:32:50 (Buckeye Half). My ultimate goal was a new PR.

I started a bit in the back and it took me 15.5 seconds to cross the line. This will prove significant in the end because my friend Jen passed me and finished ahead of me but in the final results I am ahead by 0.25 seconds!!

My Garmin GPS watch was running a bit behind the official mile markers so I did not pay much attention to my mile splits and just ran as I felt. Indications were that I was running 7 min/miles and this was good for me.

The miles rolled quickly and uneventfully. Around mile 10 I was following a group of runners who I was using for pacing. Then at mile 11 I hear someone approaching from the back. I look and it is Jen!!! She looked strong! She passes me for a while, then I pass her back, thinking that's the end of it.

While we are approaching mile 13, the runners in the front turn left and stop! Apparently, they were not registered for the race (darn bandits!) Without my pacers I am losing ground and here comes Jen again, passing me. Despite my usual finish line kick, Jen finishes ahead, but in the final chip time results I am listed ahead by a fraction of a second!



<--- Liz finishes her first Half!

My final official time: 1:31:15 (pace: 6:58) - New PR!!! (by 1 1/2 minutes)

My overall placement is 55/830 and my age group placement is 4/42. I continue to be plagued by the 4th place curse!!!

My mile splits according to my Garmin: 6:48, 6:56, 6:54, 6:50, 6:57, 6:51, 6:53, 6:53, 6:57, 7:01, 7:02, 6:52, 6:53, (last 0.1, 0.24 according to Garmin) 6:18.

If you discard the first mile and the last 0.1 mile (0.25), there are only 11 seconds difference between the fastest and slowest mile. I don't think I have ever run a more even pace in a race!

My wife's training plan was predicting under 2 hours for her first 1/2. I was predicting between 2:05 and 2:10. She started well, but slowed a lot the last 3 miles. Her final time was 2:07:44, a PR of course!!

Overall, I am very pleased that I managed to maintain a 7 min/mile pace for the entire 13.1 miles.

Next race (for me): Akron Marathon! I plan to run it slowly, using it as a training run for Athens/Greece, aiming at 3:40

Monday, September 7, 2009

I am back!!!

For a while it looked like I had lost both speed and endurance! I reached a peak before the Buckeye 50K. While recovering from that race, I injured my lower right leg (which is stronger than the left) by overstretching around the ankle (at the top, not the sides). The main pain went away quickly, but I was left with a lingering irritation and discomfort that got worse with running time. This would slow me down.

Signs that I had lost endurance:

1. Two weeks ago we had a group run with a 15 or 20 mile option. Most people did 20. I barely managed 15 and it felt really hard.

2. Last week we did the “triangle of death”, a total of 15 miles. I only did 10 and felt dead!

Sings that I had lost speed:

1. In my Wednesday speed workouts, my pace for the tempo run is slower than 7 min/mile, while before the Buckeye 50K it was around 6:30.

2. In my daily runs I am going slow. Runs with a pace of 10 min/mile with Liz feel hard (if you can believe that!) My weekly runs to the Rec Center via the Buckeye Trail are very slow.

But, everything changed last week. I decided to put an insert in my shoes and a heel lift in the right foot. That eliminated any irritation and seems to have healed my right foot, so now I am running with two strong legs. My Buckeye trail run last Thursday was the best for a long time. My Wednesday tempo run was at a decent 7 min/mile pace for 6 miles.

Finally, on Saturday I joined about 100 runners for the last long run before the Akron marathon. The run was 20 miles, following the Akron course. I was planning to run it at 9 min/mile. The first 4 miles were: 8:41, 8:32, 8:16, 8:18.

We then got into the towpath (mile 4.5). Instead of slowing down, I actually speeded up a bit: 8:03, 7:59. 8:09, 8:10.

Coming out from the towpath (mile 8.5) we hit the hills of the Metropark, slowing down (as expected) but not bad: 8:29, 8:33, 8:49, 8:51

At the top of the hill, there was Gatorade. I filled my bottle, plus I had the small energy drink that Liz likes. After this point, I ran surprisingly strong: 7:55, 8:02, 7:55, 7:55, 7:46, 7:22, 7:06, 7:15.

These are amazing times, at the end of a really long run! I finished strong, not exhausted or tired.

This good run makes me confident that I can run a decent run next Sunday for the River Run Half Marathon. The Akron Marathon will be a training run. I plan to run it easily with a 3:40 targeted time. The real race this year will be the Athens Marathon. As it turns out, I am going alone. I will try to enjoy the trip, even though the focus is on the Marathon.

Sunday, August 16, 2009

Perfect 10 Miler 2009

OK 10 Miler & the 4th place curse

After the race my wife said "I see nothing Perfect with this 10 miler... For me, it is just an OK 10 Miler..." I think she is referring to the course, with its twists and turns and long uphill stretch. Organization has been great.

The weather was sunny and rather warm. I started fast, averaging 6:35/mile for the first 3 miles (6:46, 6:37, 6:49) . I slowed down in the uphill, as expected, (7:03, 7:10) but the downhill was not much better (6:56, 6:59), I struggled in the last 2 miles (7:16, 7:11) and got passed by a couple of runners.

My final time: 1:08:51 (6:54 pace)
My 10 mile PR (in this course) remains 1:08:31 from 2007



<---- Empty-handed again!


When they posted the results at the end of the race, I was listed 3rd. So, we stayed for the awards. My wife liked the mugs they were giving and she was happy I was getting one. But the final results list me 4th. The 3 guys ahead of me are all 50 years old. It is going to be a long & tough 5 years for me!

I have been hit by the "4th place curse" lately... I finished 4th in the Independence 5K and 4th today (My wife was 4th too, with 1:36:49 – her first race over 10K -, and so did a couple of our running friends).

Next race: River Run 1/2 Marathon (Sept 13)

I signed up for the Akron Marathon last week (it is September 26).
I plan to run it slower, as a training run for the upcoming ATHENS (as in
Athens, Greece) marathon in November (8th)!

Monday, August 10, 2009

Independence 5K – 2009

<-- Example of my fine photographic work. This is a picture of Liz at the finish (she is the one on the left). Her head is missing! That's because I had the digital camera at the top of my film 3d camera. I was only interested in taking the 3d picture. I then snapped the digital picture, without looking at the display, and here are the results!


What will it take for a 50 year old to win an age award in a small local race with a time of 19:31?

Apparently, it will take a new age group... For some unknown reason, Independence age groups are shifted by one year.... Most races have 45-49 and 50-54 age groups. Independence has 46-50 and 51-55. So both my wife and I were the oldest in our age groups and we did not win any awards (in the next age group we would have both been 2nd). I was happy to turn 50, but for Independence I need to wait one more year!

The results:

- George (me): 19:31, 4/21 AG (46-50), 29/350 Overall
- Liz (wife): 26:35, 8/18 AG (46-50), 192 overall
- Lea (daughter): 31:12, 10/12 AG (15-20), 264 overall

I have run this race in 2003, 2004, 2005 and every year I set a PR. The 2005 time was 20:06 and my goal was to beat this time, so I am happy I achieved this, plus my 19:31 is not too far way from my 5K PR (19:19 from 4 weeks ago). The course (redesigned) was a bit complicated, full of turns, which might have contributed to slower times.

I was worried about a recent injury. 10 days ago I injured my lower foot while stretching after a run! At first I could not run (was hurting even when walking) but it improved quickly. During warmup for the race, I could feel it, but when the race started, any pain or discomfort instantly disappeared! It seems that the adrenaline rush is acting as an analgesic. Only at mile 2.5 I started feeling a slight discomfort but it did not slow me down.

My mile splits according to the Garmin: 6:00 (the time called at this mile split was 6:15), 6:25, 6:33, 5:37 (last 0.1).

Next Race: Perfect 10 miler!

Tuesday, July 21, 2009

50K 2009 - Aftermath


<-- At the Buckeye Trail, right after Boston, heading for Pine Lane.

The day after the 50K I went for a 6 mile “recovery” run and all the systems tested OK. The results are out and it appears that this is the fastest 50K BT race ever. Two examples: 1) There are 21 runners with time under 5 hours, vs. only 6 last year. 2) The first female runner (Beth Woodward) finished 12th overall with time 4:42. Last year (with a slightly better time) she was 3rd overall. I finished 25th. If I had maintained my pace (for a 4:55 finish) my placement would have been 19th.

About hitting the wall: I have always been proud of my strong and fast finishes in races, including marathons and previous 50Ks. I have never hit the wall in a race. I did not even think that a wall exists for me (for my body, nutrition routine, and distances that I run). So I was surprised how quickly and unexpectedly this came about.

Some people might say, you've run for 28 miles and there were only 3 miles left. Couldn't you just dig deep inside and find the strength to run them, even slowly? It was impossible. It's like saying, this car has been running for 300 miles and now it is out of gas. Can it just run 10 more miles? There was nothing left in the tank, so to speak.

My new system of eating a large breakfast before the run has served me well for up to 24 miles, but it needs to be fine tuned for longer races. If you are curious, here is what I ate at 6:00 am on race day (just one hour before the 7:00 am start): A large bowl of hot cereal with a sliced banana, raisins, walnuts, two teaspoons of peanut butter and honey at the top. Plus, an orange, and I had a glass of Gatorade. Not many people would think of running after this. A nap sounds more appropriate.

I am still glad that my collapse came from lack of energy and not from an injury (common among other runners).

After having completed 5x 50K runs (3 summer, 2 winter) I would like to try my hands (legs?) into something longer. I think I am ready for a 50 mile race. 100 miles is insane (for me, at this point). I wish the Burning River 100 also had a 50 mile section. I guess I can look for something further but I like to run/support local races.

Saturday, July 18, 2009

Buckeye 50K 2009 - Race Report



My time goal for this race was under 5 hours. I ran a strong race and consistently achieved or beat my time goals station after station. For example, my time at the half was 2:21:47 vs. 2:26 aim time. The cool weather and firm ground (it had rained enough to make the soil firm) was helping runners achieve fast times.

<--- 5 hours and 5 minutes later... Sprinting for the finish!

In the last aid station (Snowville Rd), with 6 miles left to go, I met my wife and she handed me a bottle of water. I felt fine so I did not stop to eat or drink anything. In retrospect, that was a big mistake. I should have eaten something. I arrived at this station 5 minutes ahead of time, so my projected finish time was 4:55.

The first miles in this last section went fine. I passed a young kid who was apparently falling apart. A bit later I passed 2nd Female runner Kelly Karen, and Plain Dealer columnist Zachary Lewis. Both of these guys were well ahead of me at the half, and they both appeared to be struggling a bit. I passed them easily.

But, with 3 miles to go, I started to feel tired. My pace slowed. I felt hungry and weak. Clearly, I was hitting the proverbial wall. I was out of water. I started walking. I NEEDED FOOD! I kept walking. I looked back and saw Kelly approaching. I asked if she had anything to give me to EAT. She did not. We are only 2.3 miles from the finish.

I arrived at the pavilion, 2 miles from the finish. I was happy to see Susan and Matt waiting there. I asked for food. They only had water. I gladly took water. Bur right there, two people are setting up a picnic. Their van is full with food: All kinds of snacks, chips, popcorn, and cases of pop. I explain that I am running a race and I desperately need food. They are reluctant. I asked for a single can of pop but they refused! "You are not part of our group" they said.

Disappointed, I continue to walk. Everyone that I passed in the last 10 miles, is now passing me, including the young kid. He is half-running, half-walking, but he appears to have a bit more stength than me. I continue to walk. Finally, I see a young lady, holding a basket. I ask for food. "Sorry, I do not have any food, but I have some Gatorade" she says. "YES, please give me Gatorade". She fills half of my bottle. I drink it at the spot. A rush of energy goes through my body and I am able to run again.

Only1.5 miles left to the end. I am happy to be running again. I pass the kid. But I soon need more water or Gatorade and I have nothing. Last 0.7 miles. I am running, but I also take walking breaks. I hear the Brecksville sirens (always at 12 noon - meaning it is now 5 hours into the race). Kiss 5 hours goodbye.

So, I make it to the final stretch. I see my wife and son ready to take pictures. I smile and try to run fast. As I approach the finish line, I see the clock reading 5:04:50, 51, 52, 53. I sprint. If I cannot beat 5 hours, at least I can beat 5:05!
I cross the finish at 5:04:59.

People are congratulating me (sprinting at the end of a 50K, that must be something) and Vince hands me the medal. I am starving so I go straight for the food. Within a minute I eat 5 slices of pizza, with dripping oil and all that. I then hit the cookies. I have never been able to eat right at the end of a race, so this is new to me.

As I lay in the couch, thinking about the race, I have mixed feelings. Even though I did not meet my time goal, my final time is a PR by 10 minutes. I am pleased that I ran 28 strong miles, beating my time predictions. I learned a good lesson about eating during the race. I should have eaten in the last aid station, carry some energy gels and ask my wife to meet me at the pavilion to make sure I was OK (to cover all bases). I will apply what I learned "next year".

Here are my race time splits for the race historians:

Oak Grove - Snowville: Goal: 55 min. Actual time: 53:06
Snowville - Boston: Goal: 49 minutes. Actual time: 49:30
Boston - Pine Lane: Goal 42 minutes. Actual time: 39:11
Pine Lane - Boston: Goal 42 minutes. Actual time: 39:38
Boston - Snowville: Goal 51 minutes. Actual time: 51:34
Snowville to Oak Grove: Goal 60 minutes. Actual time: 71:41

Friday, July 17, 2009

New Age Group!

Today it's my birthday!

This birthday is important because I am entering a new age bracket (50-54). I am now officially an old guy. Over 50 is also known as "Grandmaster" ("Master" is over 40) and some races have a "Grandmaster" award.

That's one good thing about running. You look forward to getting old... A new group of older guys to beat in races, and even a new award to aim for. Great!

Unfortunately, in our area there are many fast runners in the 50-54 group. As a matter of fact, it is easier to win an award in the 45-49 age group than the 50-54 age group. More pressure for me!

Wednesday, July 15, 2009

Buckeye 50K – Under 5 Hours?

They are predicting a nice cool weather for the Buckeye 50K Trail Run this Saturday so fast times are possible.

This year I have trained very well and I have a goal: Under 5 hours.

Is this goal possible? At first I did not think so, but my training runs went so well, that now I think it is possible.

A bit of history: I have run this race for two years now. The first year (2007) on a cool dry course, my time was 5:14. This was a big surprise since it was my 1st Ultra and I had just started running trails. A friend of mine (we bonded during the training runs) who always finished ahead and less tired, finished the race in 6:30, so my 5:14 (without even carrying water!) was a great achievement. Last year (2008) I did not train well, but put a lot of miles in our vacation in California. The weather on race day was hot and I finished at 5:21. My time was slower, but my placement was better than last year. Plus, I passed 7 runners in the 2nd half.

This year I have trained well and I have also timed my splits, so I know what to expect. My time during the run of the half (Oak Grove to Pine Lane) was 2:26. It felt that the pace was too fast at the time, but I have improved a bit since then. So now my goal is to run the first half in 2:26 and the second half in 3:34. That's only 8 minute difference between the two halves. If you look at last year's results (first time the half times are recorded) very few runners had such a small difference. Actually, from those who run the race under 6 hours, only two have a better difference: Kam Lee (8 minutes) and Matt Pazderak (4 minutes). My difference was 15 minutes and it was the 6th best.

Here are the times I aim to run each section (first half, second half, difference in parenthesis)

Oak Grove - Snowville Rd (6 miles): 55, 60 (5)
Snowville Rd - Boston (5.3 miles): 49, 51 (2)
Boston - Pine Lane (4.2 miles): 42, 42 (0)
Total: 2:26 + 2:34 = 5:00 (8)

My specialty is the last leg (Snowville to Oak Grove) which I have now run many times (easy for me, since I live in Brecksville, 1 mile from the entrance to the BT on Snowville Rd and I run through it to go to our fitness class, twice a week). Most runners are too tired by then, and run this leg very slowly. If I arrive at Snowville by 4 hours, I think I can finish under 5 hours.

Last night I happened to read E-Speed's (Elizabeth H.) blog where she recorded her split times from last year's 50K. This is very informative (the only published split times I have seen). Here they are (rounded to the next minute):

Oak Grove - Snowville Rd (6 miles): 53, 65 (12)
Snowville Rd - Boston (5.3 miles): 49, 53 (4)
Boston - Pine Lane (4.2 miles): 41, 41 (0)
Total: 2:22 + 2:39 = 5:02 (17)

Looks like she slowed down quite a bit after Boston in the way back. As a friend said, the race really starts after Boston.... Bodies of exhausted runners are scattered all over the place from Boston to Oak Grove :) Hopefully this will not happen to me. The trick is to try and preserve strength during the first half. I always walk the uphills. Whatever time I lose walking, I make up running them down fast in the return.