RunPaceLab

Running pace calculator

min/km

5:00

min/mile

8:03

km/h

12

Finish time predictor

Enter a recent race result to predict other distances.

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What is running pace?

Running pace is the time it takes you to cover a set distance — most commonly expressed as minutes and seconds per kilometre (min/km) or per mile (min/mile). Pace is the primary metric runners use to gauge effort, plan races, and track progress. Unlike speed (which measures distance per unit time), pace flips the relationship: a lower number means you are running faster.

Understanding your pace is fundamental to race planning. If your goal is a 45-minute 10K, you need to average 4:30 min/km. If your GPS watch shows 5:10 min/km mid-race, you know immediately you are 40 seconds per kilometre slower than target.

Common pace reference chart

min/kmmin/milekm/h5K10KHalf MarathonMarathon
4:006:2615.020:0040:001:24:232:48:46
4:307:1413.322:3045:001:34:553:09:50
5:008:0312.025:0050:001:45:293:30:57
5:308:5110.927:3055:001:56:023:52:05
6:009:3910.030:001:00:002:06:354:13:11
6:3010:289.232:301:05:002:17:084:34:17
7:0011:168.635:001:10:002:27:414:55:23

Frequently asked questions

What is a good running pace for a beginner?

A comfortable beginner pace is typically 7:00–9:00 min/km (11:15–14:30 min/mile). You should be able to hold a conversation at this effort. Focus on consistency over speed in your first months of running.

How do I convert min/km to min/mile?

Multiply your min/km pace by 1.60934. For example, 5:00 min/km × 1.60934 = 8:03 min/mile. The calculator above handles this automatically as you type.

What pace do I need for a sub-4 hour marathon?

A sub-4 hour marathon requires averaging 5:41 min/km (9:09 min/mile) for 42.195 km. Enter 4:00:00 and 42.195 in the finish time predictor above to verify.

What is the difference between pace and speed?

Pace is time per distance (e.g. 5:00 per km), while speed is distance per time (e.g. 12 km/h). They are mathematical inverses. Runners use pace because it maps directly to race strategy.

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