SUB-25 5K · 4:59 PER KM · 8:02 PER MILE
25-minute 5K pace
A 25:00 5K is exactly 5:00 per km, or 8:02.8 per mile (7.46 mph, 12 km/h on a treadmill). Running 5:00 per km lands on 25:00, not under it; to break 25 minutes, hold 4:59 per km (24:55) or 8:02 per mile (24:57). The 8:03 per mile most charts print takes 25:00.6, just over 25 minutes.
Why “8:03 per mile” is not sub-25
We read the top 5 US results for “25 minute 5k pace” on 25 September 2026. Three of them, and Google's AI summary, give 8:03 per mile as the pace for a sub-25 5K; over 3.1069 miles it takes 25:00.6. Only one chart shows 8:02. None gives a separate time for the final 0.1069 mile (about 52 seconds), lists the treadmill speed or cites a source for its “average 5K time”. The splits below add up to exactly 25:00, and the comparison uses parkrun's own published data.
Splits for a 25:00 5K
Even pacing holds one pace. The negative plan starts 2% slower and finishes 2% quicker: first half 12:38, second 12:22. Both reach 25:00 to the second. If you've never run one, negative splits explained shows how the shape works.
| Checkpoint | Even | Negative | Even /km |
|---|---|---|---|
| 1 km | 0:05:00 | 0:05:05 | 5:00 |
| 2 km | 0:10:00 | 0:10:07 | 5:00 |
| 3 km | 0:15:00 | 0:15:07 | 5:00 |
| 4 km | 0:20:00 | 0:20:05 | 5:00 |
| 5K (5 km) | 0:25:00 | 0:25:00 | 5:00 |
| Checkpoint | Even | Negative | Even /mi |
|---|---|---|---|
| Mile 1 | 0:08:03 | 0:08:09 | 8:03 |
| Mile 2 | 0:16:06 | 0:16:12 | 8:03 |
| Mile 3 | 0:24:08 | 0:24:09 | 8:02 |
| 5K (3.11 mi) | 0:25:00 | 0:25:00 | 8:07 |
To plan a different finish time, open the race pace calculator with 25:00 filled in.
Which pace to hold on the watch
The highlighted row is the slowest whole-second pace per mile that finishes under 25:00. The exact average rounded to the nearest second, 8:03, misses.
| Pace /mi | Finish | Against 25:00 |
|---|---|---|
| 7:58 | 24:45 | 0:15 under |
| 7:59 | 24:48 | 0:12 under |
| 8:00 | 24:51 | 0:09 under |
| 8:01 | 24:54 | 0:06 under |
| 8:02 | 24:57 | 0:03 under |
| 8:03 | 25:00 | 0.6 s over |
| 8:04 | 25:03 | 0:03 over |
Courses are measured along the shortest route a runner could take, so a GPS watch usually shows more distance than the course (USATF). If yours reads 1% long, it has to show 7:58 a mile to finish under 25:00 on the clock. The pace converter switches any of these paces between miles and kilometres.
| Reads long | Watch shows | Watch /mi | Watch /km |
|---|---|---|---|
| 0% | 5.00 km | 8:02 | 4:59 |
| 0.5% | 5.02 km | 8:00 | 4:58 |
| 1% | 5.05 km | 7:58 | 4:57 |
| 1.5% | 5.07 km | 7:55 | 4:55 |
| 2% | 5.10 km | 7:53 | 4:54 |
Printable pace band for 25:00
Print this page (Ctrl+P or Cmd+P) and only the band prints, 40 × 240 mm. The printable pace band page covers the 100% print setting and the 50 mm ruler check, and makes negative-split and run/walk bands for 25:00.
Print at 100% (Actual size) with headers and footers off. The strip is 40 × 240 mm. Measure the 50 mm ruler before cutting; if it is not 50 mm, your printer rescaled the page. Tape it loosely around your wrist.
RACE PACE PLANNER
5K · 0:25:00
Even splits · Continuous
| km | Time |
|---|---|
| 1 | 0:05:00 |
| 2 | 0:10:00 |
| 3 | 0:15:00 |
| 4 | 0:20:00 |
| 5 | 0:25:00 |
Elapsed time includes stops. Targets, not predictions. racepaceplanner.com
Overlap and tape here
Training at 25-minute pace: repeat times
A 25:00 5K is 12.5 laps of a 400 m track at 2:00.0 per lap, or 5:00.0 per km. Repeats at race pace are a common way to practise it, so here is the time for each common repeat distance at exactly 25:00 pace, worked from 1,500 s over 5,000 m:
| Repeat | Time at goal pace |
|---|---|
| 200 m | 1:00.0 |
| 400 m | 2:00.0 |
| 600 m | 3:00.0 |
| 800 m | 4:00.0 |
| 1000 m | 5:00.0 |
| 1200 m | 6:00.0 |
| 1 mile | 8:02.8 |
These are exact-average times to the tenth of a second. The 5K itself is not a sum of repeats, so use the splits above for race day.
How a 25-minute 5K compares
In a published survey of 45,662 UK parkrunners matched to their parkrun results (Haake, Quirk and Bullas, 2022), the median runner's average 5 km time was 29:20. A 25:00 5K is more than four minutes quicker than that. The same study called runners averaging under 20 minutes “front runners”; for that goal, see sub-20 5K pace.
Riegel's formula links a 25:00 5K to these longer races, and for distances up to the half marathon it held up in recreational runners (Vickers and Vertosick, 2016):
| Race | Equivalent time | Pace /mi |
|---|---|---|
| 10K | 52:07 | 8:23 |
| Half marathon | 1:55:00 | 8:46 |
| Marathon | 3:59:47 | 9:09 |
Common sub-25 mistakes
- Running exactly 5:00 per km. It finishes in 25:00.0, which is not sub-25. You need about a second per km in hand.
- Running 8:03 per mile. It takes 25:00.6, so use 8:02.
- Planning 3.1 miles. 5 km is 3.1069 miles; the last 0.1069 mile is about 52 seconds of running after the 3-mile marker.
- A fast first kilometre. The negative plan runs km 1 in 5:05 and the last km in 4:55; the even plan holds 5:00 all the way.
How the numbers are worked out
1,500 seconds over 5 km is 300.00 seconds a km, which reads 5:00; held for the whole race, that pace lands exactly on 25:00, so hold a second quicker: 4:59 gives 1,495 seconds, or 24:55. Each checkpoint is the exact elapsed time rounded to the nearest second, so no split drifts more than half a second and the last row is 25:00.
Sources
- World Athletics: 5 kilometres (road): the 5,000 m road race.
- NIST: unit conversion factors: 1 mile = 1.609344 km exactly.
- USATF: position on GPS used by runners: courses are measured on the shortest possible route; GPS usually reads longer.
- Haake S, Quirk H, Bullas A (2022), British Journal of General Practice 72(722): 45,662 parkrunners; median mean 5 km time 29:20.
- Riegel PS (1981), Athletic records and human endurance, American Scientist 69:285-290: the endurance formula behind the equivalents; the 1.06 exponent is the commonly used value.
- Vickers AJ, Vertosick EA (2016), BMC Sports Science, Medicine and Rehabilitation 8:26: 2,303 recreational runners; Riegel well calibrated to the half marathon, at least 10 min too fast in the marathon for half of runners.
Last checked 25 September 2026.