21:00 5K: pace, race predictions & training paces

A 5K in 21:00 is an average pace of 6:46 per mi, or 8.9 mi/h. That result suggests a VO2max of about 47.0 (Strong).

Unit: km mi

Pace

6:46/mi

4:12 per km

Speed

8.9 mi/h

Race predictions

What this result projects to at the other distances, if you trained for each.

10K
43:47 7:03/mi
Half Marathon
1:36:36 7:22/mi
Marathon
3:21:24 7:41/mi

Fitness

Estimated VO2max

47.0 ml/kg/min

Strong
Training paces

The paces this fitness supports, from easy runs to short repetitions.

Easy
8:16–9:55/mi
Marathon
7:28–8:11/mi
Threshold
7:12–7:33/mi
Interval
6:29–6:46/mi
Repetition
6:00–6:14/mi
Splits to run this time

Your time at each mark, at an even pace or with a negative split (second half faster).

mi Even Negative split
1 6:46 7:02
2 13:31 13:49
3 20:17 20:18
3.11 21:00 21:00

400 m lap on a track: 1:41

In the heat

What the same effort as a 21:00 5K costs on a warmer day.

77 °F
21:27 6:54/mi
86 °F
21:41 6:59/mi

Similar results

Same distance

Same fitness, other distances