Pace Calculator
Give any two of pace, time and distance and the third is solved, with the pace shown per kilometre and per mile at once, the speed in km/h and mph, and an even-pace splits table you can copy to the start line. Pick 5K, 10K, half or marathon for the official distance, or type any distance in either unit, and the finish-time chart under the tool lists every pace across that race's usual finishing window.
Marathon in 3:45:008:35 /mi · 11.25 km/h · 6.99 mph · finish 3:45:00
Time reads as h:mm:ss or mm:ss, pace as m:ss, and a bare number is minutes. Changing a unit converts the value with it, and the Race seg sets the official distance: a half marathon is 21.0975 km, not 21.1.
Splits
Every km at an even 5:20 per km, then the finish.
| Km | Split | Elapsed |
|---|---|---|
| 1 | 5:20 | 0:05:20 |
| 2 | 5:20 | 0:10:40 |
| 3 | 5:20 | 0:16:00 |
| 4 | 5:20 | 0:21:20 |
| 5 | 5:20 | 0:26:40 |
| 6 | 5:20 | 0:32:00 |
| 7 | 5:20 | 0:37:20 |
| 8 | 5:20 | 0:42:40 |
| 9 | 5:20 | 0:47:59 |
| 10 | 5:20 | 0:53:19 |
| 11 | 5:20 | 0:58:39 |
| 12 | 5:20 | 1:03:59 |
| 13 | 5:20 | 1:09:19 |
| 14 | 5:20 | 1:14:39 |
| 15 | 5:20 | 1:19:59 |
| 16 | 5:20 | 1:25:19 |
| 17 | 5:20 | 1:30:39 |
| 18 | 5:20 | 1:35:59 |
| 19 | 5:20 | 1:41:19 |
| 20 | 5:20 | 1:46:39 |
| 21 | 5:20 | 1:51:59 |
| 22 | 5:20 | 1:57:19 |
| 23 | 5:20 | 2:02:39 |
| 24 | 5:20 | 2:07:59 |
| 25 | 5:20 | 2:13:19 |
| 26 | 5:20 | 2:18:39 |
| 27 | 5:20 | 2:23:58 |
| 28 | 5:20 | 2:29:18 |
| 29 | 5:20 | 2:34:38 |
| 30 | 5:20 | 2:39:58 |
| 31 | 5:20 | 2:45:18 |
| 32 | 5:20 | 2:50:38 |
| 33 | 5:20 | 2:55:58 |
| 34 | 5:20 | 3:01:18 |
| 35 | 5:20 | 3:06:38 |
| 36 | 5:20 | 3:11:58 |
| 37 | 5:20 | 3:17:18 |
| 38 | 5:20 | 3:22:38 |
| 39 | 5:20 | 3:27:58 |
| 40 | 5:20 | 3:33:18 |
| 41 | 5:20 | 3:38:38 |
| 42 | 5:20 | 3:43:58 |
| 42.2finish | 1:02 | 3:45:00 |
Marathon pace chart
Finish times every 5:00 from 2:30:00 to 6:00:00, with the even pace and speed each one takes over 42.195 km. The highlighted row is the finish time above.
| Finish | Per km | Per mile | km/h | mph |
|---|---|---|---|---|
| 2:30:00 | 3:33 | 5:43 | 16.88 | 10.49 |
| 2:35:00 | 3:40 | 5:55 | 16.33 | 10.15 |
| 2:40:00 | 3:48 | 6:06 | 15.82 | 9.83 |
| 2:45:00 | 3:55 | 6:18 | 15.34 | 9.53 |
| 2:50:00 | 4:02 | 6:29 | 14.89 | 9.25 |
| 2:55:00 | 4:09 | 6:40 | 14.47 | 8.99 |
| 3:00:00 | 4:16 | 6:52 | 14.06 | 8.74 |
| 3:05:00 | 4:23 | 7:03 | 13.68 | 8.5 |
| 3:10:00 | 4:30 | 7:15 | 13.32 | 8.28 |
| 3:15:00 | 4:37 | 7:26 | 12.98 | 8.07 |
| 3:20:00 | 4:44 | 7:38 | 12.66 | 7.87 |
| 3:25:00 | 4:52 | 7:49 | 12.35 | 7.67 |
| 3:30:00 | 4:59 | 8:01 | 12.06 | 7.49 |
| 3:35:00 | 5:06 | 8:12 | 11.78 | 7.32 |
| 3:40:00 | 5:13 | 8:23 | 11.51 | 7.15 |
| 3:45:00 | 5:20 | 8:35 | 11.25 | 6.99 |
| 3:50:00 | 5:27 | 8:46 | 11.01 | 6.84 |
| 3:55:00 | 5:34 | 8:58 | 10.77 | 6.69 |
| 4:00:00 | 5:41 | 9:09 | 10.55 | 6.55 |
| 4:05:00 | 5:48 | 9:21 | 10.33 | 6.42 |
| 4:10:00 | 5:55 | 9:32 | 10.13 | 6.29 |
| 4:15:00 | 6:03 | 9:44 | 9.93 | 6.17 |
| 4:20:00 | 6:10 | 9:55 | 9.74 | 6.05 |
| 4:25:00 | 6:17 | 10:06 | 9.55 | 5.94 |
| 4:30:00 | 6:24 | 10:18 | 9.38 | 5.83 |
| 4:35:00 | 6:31 | 10:29 | 9.21 | 5.72 |
| 4:40:00 | 6:38 | 10:41 | 9.04 | 5.62 |
| 4:45:00 | 6:45 | 10:52 | 8.88 | 5.52 |
| 4:50:00 | 6:52 | 11:04 | 8.73 | 5.42 |
| 4:55:00 | 6:59 | 11:15 | 8.58 | 5.33 |
| 5:00:00 | 7:07 | 11:27 | 8.44 | 5.24 |
| 5:05:00 | 7:14 | 11:38 | 8.3 | 5.16 |
| 5:10:00 | 7:21 | 11:49 | 8.17 | 5.07 |
| 5:15:00 | 7:28 | 12:01 | 8.04 | 4.99 |
| 5:20:00 | 7:35 | 12:12 | 7.91 | 4.92 |
| 5:25:00 | 7:42 | 12:24 | 7.79 | 4.84 |
| 5:30:00 | 7:49 | 12:35 | 7.67 | 4.77 |
| 5:35:00 | 7:56 | 12:47 | 7.56 | 4.7 |
| 5:40:00 | 8:03 | 12:58 | 7.45 | 4.63 |
| 5:45:00 | 8:11 | 13:10 | 7.34 | 4.56 |
| 5:50:00 | 8:18 | 13:21 | 7.23 | 4.49 |
| 5:55:00 | 8:25 | 13:32 | 7.13 | 4.43 |
| 6:00:00 | 8:32 | 13:44 | 7.03 | 4.37 |
Race distances are the official ones. A marathon is 42.195 km and a half is 21.0975 km. Typing 26.2 or 13.1 miles shortens the course by about 30 metres, which is a handful of seconds at any pace, so the Race seg sets the exact figure and any other distance can be typed in either unit. The splits assume an even pace: they are the plan for the day, not a prediction of it, and the chart is the same arithmetic run across a whole range of finish times.
Common questions
- What is the difference between min/km and min/mile?
- They are the same speed on two rulers. A mile is 1.609344 km, so a pace per mile is the pace per kilometre multiplied by 1.609344: 5:20 per km is 8:35 per mile, and 8:00 per mile is 4:58 per km. The tool prints both every time, whichever one you typed, and switching the pace unit converts the number you entered rather than relabelling it.
- What does the calculator count as a marathon or a half marathon?
- The official distances: a marathon is 42.195 km and a half marathon is 21.0975 km. Those are 26.2188 and 13.1094 miles, so typing 26.2 or 13.1 shortens the course by about 30 metres or 15 metres, a handful of seconds at any pace. The Race seg sets the exact figure in whichever unit is selected, and a distance typed within a metre of an official one is recognised as that race.
- Are the splits even or negative?
- Even. Every kilometre or mile in the table takes the same time, and the finish row covers whatever is left after the last whole mark. A negative split, running the second half faster than the first, is a pacing choice the table does not make for you: take the even split as the average and run the early marks a few seconds slower, the late ones a few seconds faster.
- What speed do I set the treadmill to?
- The line under the pace gives the same effort as a speed, in km/h and in mph: 5:20 per km is 11.25 km/h, or 6.99 mph. Set the belt to the one the treadmill's display uses. Treadmill belts are calibrated loosely and there is no wind to push against, so the number is a starting point rather than a match for the road.
- How is the finish-time chart built?
- It is the same arithmetic as the calculator run across a range of finish times. For a recognised race the range is its usual finishing window: a marathon from 2:30:00 to 6:00:00 every five minutes, a half from 1:15:00 to 3:00:00 every five minutes, a 10K from 30:00 to 1:30:00 every two and a half minutes, and a 5K from 15:00 to 45:00 every minute. For any other distance the chart runs from a 3:00 per km sprint to a 9:00 per km walk. Each row divides the finish time by the distance for the pace and the distance by the time for the speed; nothing is looked up from a table.
- What formats does the time field accept?
- h:mm:ss such as 3:45:00, mm:ss such as 45:00, and letters such as 3h45m or 45m. A bare number is read as minutes, so 45 is 45:00. Pace takes m:ss such as 5:20, or 5m20s, or a decimal number of minutes such as 5.5. Seconds above 59, and minutes above 59 in h:mm:ss, are refused; in mm:ss the minutes may run past 59, so 75:30 is an hour and a quarter.
Pace, time and distance are solved exactly from the two you give, and splits assume an even pace. Race distances are the official ones: a half marathon is 21.0975 km.