running calculators--WAY OFF

Why dont you reverse it. Put in 5:28 for your mile PR and see what your half marathon should be.

Your mile, 2 mile, and 5k all seem to be about the same level. Your half marathon is really freaking slow for those times though. I would expect that half time to be 1:25-1:30. Could very well be due to a lack of mileage.

1:58 is you half marathon time?

Did you carry a fat guy on your back or something?

On-line calcualtors are generally pretty accurate, not 100% by an stretch of the imagination, but close enough that I often use them to predict times for athletes I coach and use the conversion to seed them in events they haven't run yet ... for example coming off an indoor season where someone has run the 5k and is getting ready for their first 10k. Those sorts of conversions are always pretty close. Even more so if your mileage is appropriate for your racing goals.

Like an above poster said, your mile - 5k times are pretty close. Although 5:28 and 19:27 seem a bit off. If you have run 5:28 on the track you should be able to run much faster (sub 19:00 - 19:10) over a road 5k - and in the mid 18s I would think on the track (18:31 is the converted time I get).

Clearly, 20-30 mpw is not enough if you want to improve your longer distance race times. Add some mileage and train at your projected 5k pace based on your mile PR.

I guess another question I would have to ask is when did you run 1:58 for the half marathon and when did you run 5:28 for the mile. Is the mile result recent?

Unles you are a crippled and aging woman you shouldn't even post those times on here. Clearly your mile and 5K courses were short and downhill, and your half-marathon was the only certified course you actually ran. You suck!

total troll, but regardless, most people who run 20-30 MPW are going to have distance marks that might be slightly out of reach and vice versa when you enter distance -- you'll have shorter distance times you can smoke.

According to McMillian, if I enter my half, my 5K is about a minute slower than what I can really run. But, my 10K prediction off a half is actually faster than what I have run. I threw up during my 10K BTW.

no way you ran a 1:58 half and weren't A., walking with your girlfriend or B., stopped to eat based on your mile/5K times. Even if you only run 20-30 miles a week.

Once I put in times for kids I coached and what they came up withwas amazingly accurate. Kids were in awe when I read projected times and they were within seconds of their actual PR's. I would think a 5:28 miler would a 1/2 marathon much faster than 1:58 if properly trained. For example, put Jeremy Wariner's PR for 400 in and I bet he can't run a marathon as fast as it says.

If you look at like distances ie 15K, 10miles, 1/2 Marthon, 20 K and Marathon these allcommonly used

Performance Predictors are in the same area .

*****sorry for the formatting but it's clear enough to understand

Enter a distance and a time (in seconds or hh:mm:ss.00 format):

Distance:21097.5- meters

Time:1:58:31.00

Your average 400m [split] pace is 134.82 seconds.

The Purdy Points for 21097.5m in 1:58:31.00 is 202.56

VO2 Max based on this performance is 37.00 ml/kg/min and VO2 at this pace (84.17% of max) is 31.14ml/kg/min.

This performance is equivalent to:

Distance Purdy VO2 Max Cameron Riegal Average

100m 15.31 24.28 12.54 24.45 19.14

200m 31.75 49.26 33.94 50.97 41.48

400m 1:14.79 1:41.26 1:25.34 1:46.27 1:31.92

800m 3:01.03 3:32.50 3:20.59 3:41.58 3:23.92

1k 3:58.15 4:31.09 4:20.93 4:40.70 4:22.72

1500m 6:25.74 7:03.49 6:55.55 7:11.42 6:54.05

1600m 6:56.40 7:34.68 7:26.91 7:41.97 7:24.99

1 Mile 6:59.26 7:37.61 7:29.85 7:44.83 7:27.89

3k 14:13.72 15:00.37 14:54.33 14:59.49 14:46.98

3200m 15:17.33 16:04.54 15:59.11 16:03.17 15:51.04

2 Mile 15:23.28 16:10.54 16:05.17 16:09.14 15:57.03

4k 19:32.60 20:21.69 20:19.75 20:20.20 20:08.56

3 Mile 23:59.16 24:49.01 24:51.63 24:49.51 24:37.33

5k 24:54.71 25:44.73 25:48.33 25:45.80 25:33.39

8k 41:25.84 42:11.99 42:28.42 42:24.02 42:07.57

6 Mile 50:48.89 51:30.03 51:48.32 51:45.52 51:28.19

10k 52:46.50 53:27.01 53:45.26 53:42.89 53:25.42

12k 1:04:18.68 1:04:53.82 1:05:09.48 1:05:10.01 1:04:53.00

15k 1:21:55.63 1:22:21.43 1:22:29.18 1:22:33.39 1:22:19.91

10 Mile 1:28:27.90 1:28:47.30 1:28:52.06 1:28:56.96 1:28:46.05

20k 1:51:49.47 1:51:57.93 1:51:57.08 1:51:59.51 1:51:56.00

Half Marathon 1:58:31.00 1:58:31.00 1:58:31.00 1:58:31.00 1:58:31.00

Marathon 4:11:39.32 4:04:47.74 4:11:51.03 4:07:05.94 4:08:51.01

100k 11:08:53.24 9:44:52.27 11:41:17.55 10:16:43.76 10:42:56.70

*** the more the distance away from the benchmark the more inaccurate they all get ie 100m time is no indication of marathon times.

BTW what did you use to generate those really weird times??

maybe you just suck so much that the pace calculators can't handle it.

They are not performance predictors. They are tables of equivalent performances. They assume that you are equally trained for each event and have equal ability for each event. You are not equally trained for a half marathon (or a 5k for that matter).

Nobody cares what the calculators say Wariner could run for a marathon. Just tell us what they predict for his 800.

That's the point I was trying to make.

runn wrote:

That's the point I was trying to make.

Yes, but what can Wariner run for 800m? All of Letsrun.com wants to know.

This was your first and only half-marathon? There's your problem. Train better = perform better. The training you're doing simply isn't going to carry you for 13.1 miles. You can't expect the light training needed to run ok in the mile to 5k to work for a race 4 times as long as your 5k.

Alan

runn wrote:

That's the point I was trying to make.

But it doesn't say anywhere that you should be able to run those times right now. So... why post it? Seemed pretty obvious to me.

That's the point I was trying to make.

Your half marathon time indicates you lack aerobic fitness. How do you work on that? Lots and lots of consistent miles, easy miles, lots of long runs, train the different energy systems, practice race pace. The idea of 'Gallowalking' a half marathon/marathon is the biggest bunch of BS! I've seen it with lots of my friends.... decent 5K times, but they 'casually' train and can barely (or not even) break 4 hours in the marathon. You've got to train properly to perform up to your 'potential'.

Mcmillan's calculator is pretty accurate. Everything from 1 mile to half marathon is real close for me.

I can't come close on my marathon prediction because bears aren't supposed to run marathons and I keep getting hurt around mile 18 and miss my time by 30 minutes.

no way you ran a 1:58 half and weren't A., walking with your girlfriend or B., stopped to eat based on your mile/5K times. Even if you only run 20-30 miles a week.

McMillans calculator is right for me when I enter a PR in some distance and only look at a range plus/minus 3 to 5 distances from it... Try it, see if it works for you too.