18.57km/h, my running speed on 6.5km 21:00

Time equivalence by distance

1km	2km	5km	10km
03:14	06:28	16:09	32:18
15km	20km	Half Marathon	Marathon
48:28	1:04:37	1:08:10	2:16:19

Split by km

km	Time/km
1 km	03:14
2 km	06:28
3 km	09:42
4 km	12:55
5 km	16:09
6 km	19:23
0.5 km	20:60

Calculate your running speed

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