Race Shape › Calculators › Running pace calculator › Sub-1:30 half marathon pace
Goal paceSub-1:30 half marathon pace
To run a sub-1:30 half marathon you need to average 4:16 per kilometre — 6:52 per mile, 14.1 km/h — and reach halfway in 45:00. Sub-1:30 is a strong club time: about 4:15/km, which usually means a 10 km under 41 minutes and 50+ km weeks.
Even-pace splits
| Distance | Clock |
|---|---|
| 5 km | 21:20 |
| 10 km | 42:39 |
| 15 km | 1:03:59 |
| 20 km | 1:25:18 |
| 21.1 km | 1:29:59 |
The fitness behind a sub-1:30 half marathon
A sub-1:30 half marathon is a VDOT of about 51.0. The same fitness, trained for each distance, runs:
| 5 km | 19:36 (3:55/km) |
|---|---|
| 10 km | 40:39 (4:04/km) |
| Marathon | 3:07:35 (4:27/km) |
So a 10 km in about 40:39 is the clearest sign you are ready. If your recent 10 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 | 5:02–5:47/km at the coast · 5:27/km or slower in Johannesburg |
|---|---|
| Threshold | 4:16/km · 4:37/km in Johannesburg |
| Intervals | 3:51/km · 4:11/km in Johannesburg |
At altitude
The same fitness is slower high up. Raced at about 1 680 m, a sub-1:30 half marathon effort comes out near 1:37:05; to break 1:30:00 up there you need fitness worth about 1:23:26 at the coast. Gauteng runners chasing this time are best off choosing a coastal race.
The sub-1:30 half marathon training plan lays out the weeks; a plan built from your own recent time says plainly whether the goal is on.
Build my sub-1:30 half marathon plan — free to buildSee your whole block before you pay.
Common questions
What pace is a sub-1:30 half marathon?
4:16 per kilometre, or 6:52 per mile.
What 10 km time shows I can run a sub-1:30 half marathon?
About 40:39 — the same fitness, trained for that distance.
How fast should easy runs be when training for a sub-1:30 half marathon?
No faster than 5:02/km at sea level, or 5:27/km in Johannesburg. Slower is fine.
Can I run a sub-1:30 half marathon in Johannesburg?
It is harder: at around 1 680 m the same effort is about 8% slower, so you need fitness worth about 1:23:26 at the coast.
How long does it take to train for a sub-1:30 half marathon?
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.