5K PACING
Calculate a 5K pace target and check your splits
Turn a 5K finish target into a pace and a set of cumulative times. The arithmetic describes the target; it does not establish that the target fits your preparation.
Start with a defined finish time
A 25-minute 5K is 1,500 seconds divided by five kilometers, giving 300 seconds per kilometer: 5:00. Using a mile of 1.609344 kilometers, the equivalent pace is approximately 8:03 per mile.
A target below 25 minutes must be below 25:00 in the calculation. For example, 24:55 corresponds to 4:59 per kilometer. Whether a particular target is appropriate depends on your running evidence and circumstances; the calculator can only translate the numbers you enter.
Use cumulative times as well as lap times
| Distance | Elapsed target |
|---|---|
| 1 km | 5:00 |
| 2 km | 10:00 |
| 3 km | 15:00 |
| 4 km | 20:00 |
| 5 km | 25:00 |
At this exact pace, 400 meters takes two minutes. That conversion can help you understand a recorded lap, but it is not a suggested interval session. A lap shorter or longer than 400 meters needs its own distance in the calculation.
Cumulative time tells you where you are relative to the whole target. A split time describes only the latest portion. Keep the column labels visible on any printed sheet.
Do not confuse GPS distance with the target distance
Suppose a device reports 5.05 km for an outing completed in 25 minutes. Dividing its recorded time by its recorded distance gives approximately 4:57 per kilometer. Dividing 25 minutes by the target race distance of 5.00 km gives 5:00. The two pace values use different denominators.
For a race finish target, keep the event's distance and timing basis explicit. For a device-history comparison, retain the recorded distance and investigate any difference. Editing one value solely to make both displays match can obscure what happened.
Review the result after the event
Use the race-splits tool to make a sheet for your chosen target, then review the actual splits in Runome afterward. Inspect where the pace changed and whether the route or stops provide context.
The consistency guide compares two equal-time 5K patterns. If you are using another distance to choose the target, check the predictor assumptions before treating an extrapolated value as a promised outcome.