Running Pace Calculator
How it worksConvert distance and time into pace — or race finish times
Your pace
Pace / km
5:36 /km
Pace / mile
9:01 /mi
Finish times at this pace
About this tool
Pace turns raw distance and time into something you can train with — splits, race goals, and easy-day limits.
This tool computes average pace from a run you already did, then projects finish times at common race distances if you held that pace (real races usually need fueling and pacing strategy).
Terrain, heat, elevation, and fitness change what is realistic. Treat projections as planning aids, not guarantees.
How it works
- Enter distance (km) and your time as mm:ss or h:mm:ss.
- We show pace per km and per mile.
- We also estimate finish times for 5K, 10K, half marathon, and marathon at that same average pace.
Practical tips
- Use recent race or time-trial data for goal projections — not an all-out downhill segment.
- Build long-run and race pace separately; easy runs should usually be slower than goal pace.
- Negative splits (second half faster) often beat going out too hard.
Frequently asked questions
How do I enter time?
Use m:ss (e.g. 28:30) or h:mm:ss (e.g. 1:32:10). A single number is treated as minutes.
Why don’t race projections match my watch?
Watches use GPS smoothing and personal models. This calculator is pure math: distance ÷ time. Hills and stops still count in average pace.
Can I use miles?
Enter distance in kilometres for now (1 mile ≈ 1.609 km). Pace is also shown as min/mile automatically.
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Disclaimer: These tools provide general estimates only. They are not medical advice. For health conditions, pregnancy, or personalised nutrition, speak with a qualified professional.