Zone2CalConvert min/km pace to one lap.
A 400m lap is 40% of one kilometer, so the calculator turns target pace into a practical track split.
Track Lap Calculator
Enter your target pace and instantly calculate your track lap time.
Enter your min/km pace to get your 400m lap time instantly. Find out how to plan track workouts like intervals, tempo runs, and Yasso 800s.
400m Lap Time Calculator for Track Workouts
Select your target pace to calculate 200m, 400m, 800m, and 1km splits instantly.
Target Pace (min/km)
200m
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400m
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800m
—
1km
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Typical Pace Reference
Recovery
6:00–7:00
Easy Aerobic
5:30–6:00
Tempo
4:30–5:00
Intervals
3:30–4:30
How do you calculate 400m lap time from pace?
Match pace to the session goal.
Use LT pace for cruise intervals, 5K pace for sharp repeats, and marathon pace for controlled rhythm work.
Keep the last reps honest.
If lap times collapse late, adjust recovery or target pace instead of forcing every repeat at the same split.
Frequently Asked Questions
These answers match the structured FAQ data on this page.
How do I convert pace to 400m lap time?
Enter pace in min/km and the calculator converts it to target 400m lap time for track repeats.
Can I use this for 800m intervals?
Yes. Double the 400m split as a baseline for 800m reps, then adjust by workout objective.
What pace should I use for interval days?
Use paces tied to your current goal race fitness and keep recoveries controlled to sustain quality across repeats.
Last updated: February 25, 2026