Sub-37:30 10K
A sub-37:30 10K is 6:02 per mile (3:45 per kilometre) for 6.2 miles, which is a 56 VDOT performance. At this level the 10K is a threshold race — sustained discomfort from the second mile on, with nowhere to hide.
Mile-by-mile splits for 37:30
A 10K gives you no room for a strategic error and just enough room for a tactical one. The even-split table holds 6:02 per mile to a 37:30 finish, with 18:45 at 5K. The most common way to miss this goal is to run the first mile eight seconds fast and spend miles four through six paying for it at compound interest.
The negative-split table opens at 6:06 per mile, turns 5K in 18:56, then closes at 5:58. For most runners this is the higher-percentage race: the opening pace feels controlled rather than committed, and the finish is a decision you get to make rather than one made for you.
Even splits — 6:02 per mile
| Mile | Pace | Split | Elapsed |
|---|---|---|---|
| 1 | 6:02 | 6:02 | 6:02 |
| 2 | 6:02 | 6:02 | 12:04 |
| 3 | 6:02 | 6:02 | 18:06 |
| 4 | 6:02 | 6:02 | 24:08 |
| 5 | 6:02 | 6:02 | 30:11 |
| 6 | 6:02 | 6:02 | 36:13 |
| 6.2 | 6:02 | 1:17 | 37:30 |
Even pacing: 6:02 per mile for all 6.2 miles, finishing in 37:30.
Slight negative split — 6:06 out, 5:58 home
| Mile | Pace | Split | Elapsed |
|---|---|---|---|
| 1 | 6:06 | 6:06 | 6:06 |
| 2 | 6:06 | 6:06 | 12:11 |
| 3 | 6:06 | 6:06 | 18:17 |
| 4 | 5:59 | 5:59 | 24:16 |
| 5 | 5:58 | 5:58 | 30:15 |
| 6 | 5:58 | 5:58 | 36:13 |
| 6.2 | 5:58 | 1:17 | 37:30 |
One percent either side of even: 6:06 per mile through halfway (18:56), then 5:58 home. Same 37:30 finish. The mile that straddles halfway blends both paces.
Per kilometre — 3:45 per km
| Km | Pace | Split | Elapsed |
|---|---|---|---|
| 1 | 3:45 | 3:45 | 3:45 |
| 2 | 3:45 | 3:45 | 7:30 |
| 3 | 3:45 | 3:45 | 11:15 |
| 4 | 3:45 | 3:45 | 15:00 |
| 5 | 3:45 | 3:45 | 18:45 |
| 6 | 3:45 | 3:45 | 22:30 |
| 7 | 3:45 | 3:45 | 26:15 |
| 8 | 3:45 | 3:45 | 30:00 |
| 9 | 3:45 | 3:45 | 33:45 |
| 10 | 3:45 | 3:45 | 37:30 |
Even pacing in metric: 3:45 per kilometre across 10.0 km.
Are you ready for a sub-37:30 10K?
| Distance | Equivalent time | Pace /mi | Pace /km |
|---|---|---|---|
| 5K | 18:05 | 5:49 | 3:37 |
| 10K — your goal (37:30) | 37:31 | 6:02 | 3:45 |
| Half Marathon | 1:22:58 | 6:20 | 3:56 |
| Marathon | 2:53:15 | 6:36 | 4:06 |
Equivalent times are computed from the rounded VDOT of 56, so the 10K row lands within a few seconds of 37:30 rather than exactly on it. That is rounding, not a different prediction.
The table above is what a sub-37:30 10K implies elsewhere: you should be racing about a 18:05 5K, which projects to a 1:22:58 half marathon. At 6:02 per mile there is no strategic complexity left in this race — you hold a hard pace for 6.2 miles and the clock decides.
The defining number here is the gap between race pace and threshold: 6:02 against 6:15. A 10K at this level is run several seconds per mile FASTER than threshold, which means you are accumulating cost from about mile two onward and finishing on borrowed time. That is why the sessions that move this barrier are threshold intervals and interval work at 5:46 per mile — not longer easy runs. The fitness ceiling is real and it is raised in increments.
Sub-37:30 is the ladder's own admission that minutes cost more up here — the rungs tighten to two-and-a-half-minute steps precisely because the climb steepens. From 40:00 flat to this rung is roughly four VDOT points; the same two and a half minutes further down the ladder costs a fraction of that. The race itself is 3:45 per kilometre — 6:02 in imperial — sitting thirteen seconds a mile inside threshold, serviced by intervals at 5:46 and a 5K around 18:05. A goal for runners who have stopped asking whether they are fit and started asking how fit, exactly.
Where do you stand right now?
Enter a race you have actually run and this will tell you where you stand against the 56 VDOT a sub-37:30 10K requires — your score, the target, and the gap. Nothing is stored or sent anywhere.
Training paces for a sub-37:30 10K
These are day-one paces for a 56 VDOT — the fitness a sub-37:30 10K requires. They are a snapshot, not a season: as you get fitter every one of them should get faster, and training at last month's paces is how a good block goes stale.
| Pace | min/mi | min/km | Where it is used |
|---|---|---|---|
| Easy | 7:31 | 4:40 | Most of your week |
| Marathon | 6:36 | 4:06 | Race-pace work |
| Threshold | 6:15 | 3:53 | Tempo / cruise intervals |
| Interval | 5:46 | 3:35 | VO₂max work |
| Repetition | 5:25 | 3:22 | Speed and form |
| Recovery | 9:07 | 5:40 | Shake-out jogs |
Easy pace is a range rather than a point — Daniels defines it as 59–74% of VO₂max, which for the fitness behind a sub-37:30 10K runs from 7:11 to 8:37 per mile. The single easy figure below is the 70% value.
Paces that move when you do.
The table above is a static snapshot of the VDOT 56 behind a sub-37:30 10K. Why Not recalculates the same six paces after every run you log — pulling them tighter as you get fitter, easing them off when you are cooked, and rebuilding the plan around the weeks life actually gave you.
Build my sub-37:30 planSub-37:30 10K FAQ
6:02 per mile, or 3:45 per kilometre, for 6.2 miles — 5K on the clock at 18:45. The negative-split option opens at 6:06 and finishes at 5:58.
VDOT 56, which sets every training pace listed below.
You race it faster than threshold. Required pace is 6:02 against a threshold pace of 6:15, so you are running above sustainable from early on and finishing on accumulated cost. It hurts, by design.
About a 18:05 5K, or a 1:22:58 half marathon — the equivalents at VDOT 56.
Threshold work at 6:15 and intervals at 5:46, not extra easy volume. Repetitions at 5:25 sharpen the finish. Keep easy days at 7:31 so the quality lands.
Every number on this page is computed from our own implementation of the Daniels–Gilbert formulas published in Daniels' Running Formula (Jack Daniels & Jimmy Gilbert) — the same library the Why Not app runs. Nothing is transcribed from the book's tables, and this site is not affiliated with or endorsed by the authors. Equivalent times assume you train appropriately for the target distance; that caveat is Daniels' own.
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A human marathon coach runs $100 to $300 a month and rebuilds your plan when you email them. Why Not runs the same Daniels VDOT engine behind every number on this page and adapts after every workout. A full year of the app costs less than the cheapest month of human coaching.
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