Race Shape › Calculators › Running pace calculator › Sub-50 10k pace
Goal paceSub-50 10k pace
To run a sub-50 10k you need to average 5:00 per kilometre — 8:03 per mile, 12.0 km/h — and hold it from the first kilometre to the last. Sub-50 pairs with roughly a 24-minute 5 km. Threshold runs at about 5:10/km do more for it than anything else.
Even-pace splits
| Distance | Clock |
|---|---|
| 1 km | 5:00 |
| 2 km | 10:00 |
| 3 km | 15:00 |
| 4 km | 20:00 |
| 5 km | 25:00 |
| 6 km | 29:59 |
| 7 km | 34:59 |
| 8 km | 39:59 |
| 9 km | 44:59 |
| 10 km | 49:59 |
The fitness behind a sub-50 10k
A sub-50 10k is a VDOT of about 40.0. The same fitness, trained for each distance, runs:
| 5 km | 24:06 (4:49/km) |
|---|---|
| Half marathon | 1:50:52 (5:15/km) |
| Marathon | 3:49:34 (5:26/km) |
So a 5 km in about 24:06 is the clearest sign you are ready. If your recent 5 km is well slower than that, the goal is still on — it needs a block, not a hopeful race day.
Training paces for it
| Easy | 6:07–6:59/km at the coast · 6:37/km or slower in Johannesburg |
|---|---|
| Threshold | 5:11/km · 5:37/km in Johannesburg |
| Intervals | 4:41/km · 5:05/km in Johannesburg |
At altitude
The same fitness is slower high up. Raced at about 1 680 m, a sub-50 10k effort comes out near 53:56; to break 50:00 up there you need fitness worth about 46:21 at the coast. Gauteng runners chasing this time are best off choosing a coastal race.
The sub-50 10k training plan lays out the weeks; a plan built from your own recent time says plainly whether the goal is on.
Build my sub-50 10k plan — free to buildSee your whole block before you pay.
Common questions
What pace is a sub-50 10k?
5:00 per kilometre, or 8:03 per mile.
What 5 km time shows I can run a sub-50 10k?
About 24:06 — the same fitness, trained for that distance.
How fast should easy runs be when training for a sub-50 10k?
No faster than 6:07/km at sea level, or 6:37/km in Johannesburg. Slower is fine.
Can I run a sub-50 10k in Johannesburg?
It is harder: at around 1 680 m the same effort is about 8% slower, so you need fitness worth about 46:21 at the coast.
How long does it take to train for a sub-50 10k?
It depends on the gap. Improving about 0.4% a week is a reasonable rate for a trained runner, so a 5% gap is roughly 12–13 weeks. The plan page works it out.