Run your pace.
Find your next one.
Training, tools, pacing and safety for people who run — whether that’s your first unbroken mile or your fastest marathon.
Some days it’s freeing. Some days it’s four miles of negotiating with yourself.
SplitPace is built for both. Someone walking half of their first mile and someone chasing a Boston qualifier want the same thing from us — the real number, and an honest account of what it asks.
Where are you headed?
None of these assume you’re already fast.
Every pace, split and equivalent time here is computed by one tested library — a marathon is 42,195 metres, not 26.2 miles, and nobody types a number in by hand. We publish the formulas and name the models, so you can check the arithmetic instead of trusting it. How we calculate →
What a finish time actually asks of you
Before you click anything. Every row opens a full resource — all splits, checkpoints and a printable band.
Computed, not curated — and deliberately bounded. A finish time earns a page when a runner plausibly targets it, not because we can generate the URL.
| Finish | Per mile | Per km |
|---|---|---|
| 18:00 | 5:48 | 3:36 |
| 19:00 | 6:07 | 3:48 |
| 20:00 | 6:26 | 4:00 |
| 21:00 | 6:46 | 4:12 |
| 22:00 | 7:05 | 4:24 |
| 23:00 | 7:24 | 4:36 |
| Finish | Per mile | Per km |
|---|---|---|
| 40:00 | 6:26 | 4:00 |
| 42:00 | 6:46 | 4:12 |
| 44:00 | 7:05 | 4:24 |
| 46:00 | 7:24 | 4:36 |
| 48:00 | 7:43 | 4:48 |
| 50:00 | 8:03 | 5:00 |
Every number here comes from one place
A marathon is 42,195 metres, not 26.2 miles. Splits are computed to full precision and rounded once, at the end. We publish the formulas, name the models, and state the assumptions they rest on.
