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Run the
numbers.

Enter any two — distance, finish time or pace — and the third is calculated instantly, updating as you type.

Calculator

Calculate

Distance

Distance

Finish time

Hours : Minutes : Seconds

hours : minutes : seconds

Pace (per km)

Pace, minutes : Pace, seconds

minutes : seconds

Your pace

–

Pace: –
Speed: –
Time: –
Distance: –

Splits

Splits follow your chosen unit: every kilometre, or every mile, assuming an even pace.

Total distance: –
Halfway clock: –
Final stretch: –

Split times assuming an even pace
Split	Segment	Cumulative

Calculate a result above and your splits will appear here.

Race predictions

Your result is projected onto common race distances using Peter Riegel's fatigue formula — it assumes you train appropriately for each distance.

Select a row to load that time into the calculator.

Enter a distance and time above to project your race times.