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Calculate pace, finish time, or distance for any run. Projects 5K to marathon finish times.
Running pace is the time taken to cover one mile or one kilometer, expressed as minutes per mile (min/mi) or minutes per kilometer (min/km). It is the inverse of running speed.
Race Finish Projections
Formula
Pace = Total Time (min) ÷ DistancePace = minutes per mile or per km
Total Time = race or run duration in minutes
Distance = miles or kilometers covered
Worked Example
Example: 5K in 25 minutes (miles)
Did you know? The current marathon world record is 2:00:35 (4:36/mile pace) set by Kelvin Kiptum in Chicago in 2023 — a pace most runners cannot sustain for even 400 metres.
Sources
| Goal | Pace/mi | Pace/km |
|---|---|---|
| Sub 3:00 marathon | 6:52/mi | 4:16/km |
| Sub 3:30 marathon | 8:02/mi | 4:59/km |
| Sub 4:00 marathon | 9:09/mi | 5:41/km |
| Sub 4:30 marathon | 10:18/mi | 6:24/km |
| Sub 5:00 marathon | 11:27/mi | 7:06/km |
| Sub 25:00 5K | 8:03/mi | 5:00/km |
| Sub 30:00 5K | 9:39/mi | 6:00/km |
Formula
Pace (min/km) = time (min) ÷ distance (km) | Speed (km/h) = 60 ÷ pace (min/km)Pace = Minutes per kilometre or mile — how long to run each unit of distance
Speed = Kilometres or miles per hour — distance covered per unit of time
Finish time = Pace × distance — total race duration at a constant pace
Worked Example
Pace needed to finish a half-marathon (21.1 km) in 2:00:00
Did you know? The world record marathon pace (Kelvin Kiptum, 2:00:35 in 2023) is approximately 2:51 min/km or 4:35 min/mile — sustained for 42.195 km. That's faster than most recreational runners can sprint a single 400 m lap.
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