Track Lap Time Calculator (400 m Splits)
Enter the race distance, goal time and lap length.
Your numbers
Your results
Lap time
Lap time
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Lap time (seconds)
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Laps
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Pace per km
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Per 200 m (seconds)
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Track Lap Time Calculator (400 m Splits) by TheCalcTools
How the Track Lap Time Calculator (400 m Splits) works
Lap time = goal time ÷ race distance × lap length. On a standard 400 m track, a 20-minute 5K needs 96-second laps, 12.5 laps in all.
Even splits are usually fastest; many runners start a second or two per lap slower than goal pace and finish faster.
The formula
Lap time = goal time × lap length ÷ distance
Worked example
Using the default values shown in the calculator:
| Race distance (m) | 5000 |
|---|---|
| Goal time: minutes | 20 |
| Goal time: seconds | 0 |
| Lap length (m) | 400 |
- A 20:00 5K needs 1:36.0 per 400 m lap, 12.50 laps, 4:00 per km.
Result:
| Lap time | 1:36.0 |
|---|---|
| Lap time (seconds) | 96.0 |
| Laps | 12.50 |
| Pace per km | 4:00 |
| Per 200 m (seconds) | 48.0 |
Frequently asked questions
What lap time for a 5-minute mile?
About 74.6 seconds per 400 m (a mile is 1,609.344 m).
Sources and further reading
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.