Race Shape › Calculators › Running pace calculator › Sub-4:30 marathon pace
Goal paceSub-4:30 marathon pace
To run a sub-4:30 marathon you need to average 6:24 per kilometre — 10:18 per mile, 9.4 km/h — and reach halfway in 2:15:00. Sub-4:30 asks for about 6:24/km and a long run that builds past 30 km at least twice.
Even-pace splits
| Distance | Clock |
|---|---|
| 5 km | 32:00 |
| 10 km | 1:03:59 |
| 15 km | 1:35:59 |
| 20 km | 2:07:58 |
| 21.1 km | 2:14:59 |
| 25 km | 2:39:58 |
| 30 km | 3:11:57 |
| 35 km | 3:43:57 |
| 40 km | 4:15:56 |
| 42.2 km | 4:29:59 |
The fitness behind a sub-4:30 marathon
A sub-4:30 marathon is a VDOT of about 32.8. The same fitness, trained for each distance, runs:
| 5 km | 28:30 (5:42/km) |
|---|---|
| 10 km | 59:13 (5:55/km) |
| Half marathon | 2:11:14 (6:13/km) |
So a half marathon in about 2:11:14 is the clearest sign you are ready. If your recent half marathon is well slower than that, the goal is still on — it needs a block, not a hopeful race day.
Training paces for it
| Easy | 7:09–8:09/km at the coast · 7:44/km or slower in Johannesburg |
|---|---|
| Threshold | 6:05/km · 6:35/km in Johannesburg |
| Intervals | 5:30/km · 5:58/km in Johannesburg |
At altitude
The same fitness is slower high up. Raced at about 1 680 m, a sub-4:30 marathon effort comes out near 4:51:14; to break 4:30:00 up there you need fitness worth about 4:10:19 at the coast. Gauteng runners chasing this time are best off choosing a coastal race.
The sub-4:30 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-4:30 marathon plan — free to buildSee your whole block before you pay.
Common questions
What pace is a sub-4:30 marathon?
6:24 per kilometre, or 10:18 per mile.
What half marathon time shows I can run a sub-4:30 marathon?
About 2:11:14 — the same fitness, trained for that distance.
How fast should easy runs be when training for a sub-4:30 marathon?
No faster than 7:09/km at sea level, or 7:44/km in Johannesburg. Slower is fine.
Can I run a sub-4:30 marathon in Johannesburg?
It is harder: at around 1 680 m the same effort is about 8% slower, so you need fitness worth about 4:10:19 at the coast.
How long does it take to train for a sub-4:30 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.