12.45km/h, my running speed on 8.3km 40:00

Time equivalence by distance

1km	2km	5km	10km
04:49	09:38	24:06	48:12
15km	20km	Half Marathon	Marathon
1:12:17	1:36:23	1:41:40	3:23:21

Split by km

km	Time/km
1 km	04:49
2 km	09:38
3 km	14:27
4 km	19:17
5 km	24:06
6 km	28:55
7 km	33:44
8 km	38:33
0.3 km	39:60

Calculate your running speed

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