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Marathon Pace Calculator
The Marathon is 42.2 km (26.2 miles · 42.195 km · 26.22 mi). At an even 5:00 /km (8:03 /mile) it takes 3:30:59 — that is 12 km/h (7.46 mph). Enter your own target time below.
Pace and speed are derived from one exact figure — your speed in metres per second — so min/km, min/mile, km/h and mph all agree and round-trip exactly. 1 mile = 1609.344 m.
Note: The marathon is 42.195 km — about 26.219 miles — set from the 1908 London Olympic course and standardised in 1921.
Marathon pace chart — finish time by pace
Every even pace from 3:00 to 8:00 per kilometre, with the Marathon finish time it produces and the equivalent min/mile, km/h and mph.
| Pace /km | Pace /mile | Finish | km/h | mph |
|---|---|---|---|---|
| 3:00 | 4:50 | 2:06:35 | 20 | 12.4 |
| 3:15 | 5:14 | 2:17:08 | 18.5 | 11.5 |
| 3:30 | 5:38 | 2:27:41 | 17.1 | 10.7 |
| 3:45 | 6:02 | 2:38:14 | 16 | 9.94 |
| 4:00 | 6:26 | 2:48:47 | 15 | 9.32 |
| 4:15 | 6:50 | 2:59:20 | 14.1 | 8.77 |
| 4:30 | 7:15 | 3:09:53 | 13.3 | 8.28 |
| 4:45 | 7:39 | 3:20:26 | 12.6 | 7.85 |
| 5:00 | 8:03 | 3:30:59 | 12 | 7.46 |
| 5:15 | 8:27 | 3:41:31 | 11.4 | 7.1 |
| 5:30 | 8:51 | 3:52:04 | 10.9 | 6.78 |
| 5:45 | 9:15 | 4:02:37 | 10.4 | 6.48 |
| 6:00 | 9:39 | 4:13:10 | 10 | 6.21 |
| 6:15 | 10:04 | 4:23:43 | 9.6 | 5.97 |
| 6:30 | 10:28 | 4:34:16 | 9.23 | 5.74 |
| 6:45 | 10:52 | 4:44:49 | 8.89 | 5.52 |
| 7:00 | 11:16 | 4:55:22 | 8.57 | 5.33 |
| 7:15 | 11:40 | 5:05:55 | 8.28 | 5.14 |
| 7:30 | 12:04 | 5:16:28 | 8 | 4.97 |
| 7:45 | 12:28 | 5:27:01 | 7.74 | 4.81 |
| 8:00 | 12:52 | 5:37:34 | 7.5 | 4.66 |
Marathon splits — every kilometre
Even-pace splits for a 3:30:59 Marathon (5:00 /km): the cumulative time on the clock as you pass each kilometre marker.
| Marker | Split | Cumulative |
|---|---|---|
| 1 km | 5:00 | 5:00 |
| 2 km | 5:00 | 10:00 |
| 3 km | 5:00 | 15:00 |
| 4 km | 5:00 | 20:00 |
| 5 km | 5:00 | 25:00 |
| 6 km | 5:00 | 30:00 |
| 7 km | 5:00 | 35:00 |
| 8 km | 5:00 | 40:00 |
| 9 km | 5:00 | 45:00 |
| 10 km | 5:00 | 50:00 |
| 11 km | 5:00 | 55:00 |
| 12 km | 5:00 | 1:00:00 |
| 13 km | 5:00 | 1:05:00 |
| 14 km | 5:00 | 1:10:00 |
| 15 km | 5:00 | 1:15:00 |
| 16 km | 5:00 | 1:20:00 |
| 17 km | 5:00 | 1:25:00 |
| 18 km | 5:00 | 1:30:00 |
| 19 km | 5:00 | 1:35:00 |
| 20 km | 5:00 | 1:40:00 |
| 21 km | 5:00 | 1:45:00 |
| 22 km | 5:00 | 1:50:00 |
| 23 km | 5:00 | 1:55:00 |
| 24 km | 5:00 | 2:00:00 |
| 25 km | 5:00 | 2:05:00 |
| 26 km | 5:00 | 2:10:00 |
| 27 km | 5:00 | 2:15:00 |
| 28 km | 5:00 | 2:20:00 |
| 29 km | 5:00 | 2:25:00 |
| 30 km | 5:00 | 2:30:00 |
| 31 km | 5:00 | 2:35:00 |
| 32 km | 5:00 | 2:40:00 |
| 33 km | 5:00 | 2:45:00 |
| 34 km | 5:00 | 2:50:00 |
| 35 km | 5:00 | 2:55:00 |
| 36 km | 5:00 | 3:00:00 |
| 37 km | 5:00 | 3:05:00 |
| 38 km | 5:00 | 3:10:00 |
| 39 km | 5:00 | 3:15:00 |
| 40 km | 5:00 | 3:20:00 |
| 41 km | 5:00 | 3:25:00 |
| 42 km | 5:00 | 3:30:00 |
| Finish (42.2 km) | 0:59 | 3:30:59 |
Marathon splits — every mile
The same 3:30:59 Marathon broken into one-mile splits (8:03 /mile).
| Marker | Split | Cumulative |
|---|---|---|
| 1 mi | 8:03 | 8:03 |
| 2 mi | 8:03 | 16:06 |
| 3 mi | 8:03 | 24:08 |
| 4 mi | 8:03 | 32:11 |
| 5 mi | 8:03 | 40:14 |
| 6 mi | 8:03 | 48:17 |
| 7 mi | 8:03 | 56:20 |
| 8 mi | 8:03 | 1:04:23 |
| 9 mi | 8:03 | 1:12:25 |
| 10 mi | 8:03 | 1:20:28 |
| 11 mi | 8:03 | 1:28:31 |
| 12 mi | 8:03 | 1:36:34 |
| 13 mi | 8:03 | 1:44:37 |
| 14 mi | 8:03 | 1:52:40 |
| 15 mi | 8:03 | 2:00:42 |
| 16 mi | 8:03 | 2:08:45 |
| 17 mi | 8:03 | 2:16:48 |
| 18 mi | 8:03 | 2:24:51 |
| 19 mi | 8:03 | 2:32:54 |
| 20 mi | 8:03 | 2:40:56 |
| 21 mi | 8:03 | 2:48:59 |
| 22 mi | 8:03 | 2:57:02 |
| 23 mi | 8:03 | 3:05:05 |
| 24 mi | 8:03 | 3:13:08 |
| 25 mi | 8:03 | 3:21:11 |
| 26 mi | 8:03 | 3:29:13 |
| Finish (26.2 mi) | 1:46 | 3:30:59 |
Marathon race-time predictions (Riegel estimate)
If your Marathon is worth 3:30:59, the Riegel formula estimates these equivalent times at other distances. These are estimates — real results depend on training, terrain and pacing.
| Distance | Predicted | Pace /km | Pace /mile |
|---|---|---|---|
| 1500 m | 6:08 | 4:06 | 6:35 |
| 3000 m | 12:48 | 4:16 | 6:52 |
| 1 Mile | 6:37 | 4:07 | 6:37 |
| 5K | 22:00 | 4:24 | 7:05 |
| 10K | 45:52 | 4:35 | 7:23 |
| 15K | 1:10:29 | 4:42 | 7:34 |
| 10 Mile | 1:15:57 | 4:43 | 7:36 |
| Half Marathon | 1:41:12 | 4:48 | 7:43 |
| 30K | 2:26:58 | 4:54 | 7:53 |
| 50K | 4:12:34 | 5:03 | 8:08 |
| 50 Mile | 6:58:15 | 5:12 | 8:22 |
| 100K | 8:46:35 | 5:16 | 8:28 |
| 100 Mile | 14:32:00 | 5:25 | 8:43 |
How Marathon pace is calculated
Pace is simply time ÷ distance. This page works it out exactly: it converts your Marathon into metres and your time into seconds, divides to get one speed in metres per second, then expresses that single number as min/km, min/mile, km/h and mph. Because a kilometre is exactly 1000 m and a mile exactly 1609.344 m, the four figures always agree and convert back to machine precision. Only the Riegel predictions above are estimates.
FAQ
What is a good Marathon time?
"Good" depends entirely on the runner, but a useful reference point is even pacing. At 5:00 /km (8:03 /mile) a Marathon takes 3:30:59. Enter your own target above and the calculator shows the exact pace and speed you need; the pace chart below lists finish times for every pace from 3:00 to 8:00 /km.
How many kilometres is a Marathon?
A Marathon is 42.2 km, which is 26.2 miles (42.195 km · 26.22 mi). A mile is exactly 1609.344 m, so the conversion is exact rather than rounded.
What pace do I need for a 3:30:59 Marathon?
To finish a Marathon in 3:30:59 you hold 5:00 per kilometre, which is 8:03 per mile, or 12 km/h (7.46 mph). The split table below shows the clock at every kilometre and mile for that pace.
How are the Marathon race-time predictions calculated?
They use the Riegel formula, t₂ = t₁ × (d₂ / d₁)^1.06, a published 1977 model that scales a known result to another distance. It is an estimate, not a guarantee — real times depend on training, terrain, heat and pacing — and it is the only estimate on this page. Every pace and speed conversion here is exact.