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10K Pace Calculator
The 10K is 10 km (6.21 miles · 6.21 miles). At an even 5:00 /km (8:03 /mile) it takes 50:00 — 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.
10K pace chart — finish time by pace
Every even pace from 3:00 to 8:00 per kilometre, with the 10K 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 | 30:00 | 20 | 12.4 |
| 3:15 | 5:14 | 32:30 | 18.5 | 11.5 |
| 3:30 | 5:38 | 35:00 | 17.1 | 10.7 |
| 3:45 | 6:02 | 37:30 | 16 | 9.94 |
| 4:00 | 6:26 | 40:00 | 15 | 9.32 |
| 4:15 | 6:50 | 42:30 | 14.1 | 8.77 |
| 4:30 | 7:15 | 45:00 | 13.3 | 8.28 |
| 4:45 | 7:39 | 47:30 | 12.6 | 7.85 |
| 5:00 | 8:03 | 50:00 | 12 | 7.46 |
| 5:15 | 8:27 | 52:30 | 11.4 | 7.1 |
| 5:30 | 8:51 | 55:00 | 10.9 | 6.78 |
| 5:45 | 9:15 | 57:30 | 10.4 | 6.48 |
| 6:00 | 9:39 | 1:00:00 | 10 | 6.21 |
| 6:15 | 10:04 | 1:02:30 | 9.6 | 5.97 |
| 6:30 | 10:28 | 1:05:00 | 9.23 | 5.74 |
| 6:45 | 10:52 | 1:07:30 | 8.89 | 5.52 |
| 7:00 | 11:16 | 1:10:00 | 8.57 | 5.33 |
| 7:15 | 11:40 | 1:12:30 | 8.28 | 5.14 |
| 7:30 | 12:04 | 1:15:00 | 8 | 4.97 |
| 7:45 | 12:28 | 1:17:30 | 7.74 | 4.81 |
| 8:00 | 12:52 | 1:20:00 | 7.5 | 4.66 |
10K splits — every kilometre
Even-pace splits for a 50:00 10K (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 |
10K splits — every mile
The same 50:00 10K 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 |
| Finish (6.21 mi) | 1:43 | 50:00 |
10K race-time predictions (Riegel estimate)
If your 10K is worth 50:00, 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 | 6:42 | 4:28 | 7:11 |
| 3000 m | 13:57 | 4:39 | 7:29 |
| 1 Mile | 7:13 | 4:29 | 7:13 |
| 5K | 23:59 | 4:48 | 7:43 |
| 15K | 1:16:51 | 5:07 | 8:15 |
| 10 Mile | 1:22:48 | 5:09 | 8:17 |
| Half Marathon | 1:50:19 | 5:14 | 8:25 |
| 30K | 2:40:13 | 5:20 | 8:36 |
| Marathon | 3:50:01 | 5:27 | 8:46 |
| 50K | 4:35:21 | 5:30 | 8:52 |
| 50 Mile | 7:35:58 | 5:40 | 9:07 |
| 100K | 9:34:05 | 5:44 | 9:14 |
| 100 Mile | 15:50:39 | 5:54 | 9:30 |
How 10K pace is calculated
Pace is simply time ÷ distance. This page works it out exactly: it converts your 10K 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 10K time?
"Good" depends entirely on the runner, but a useful reference point is even pacing. At 5:00 /km (8:03 /mile) a 10K takes 50:00. 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 10K?
A 10K is 10 km, which is 6.21 miles (6.21 miles). A mile is exactly 1609.344 m, so the conversion is exact rather than rounded.
What pace do I need for a 50:00 10K?
To finish a 10K in 50:00 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 10K 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.