10.61km/h, my running speed on 4.2km 23:45

Time equivalence by distance

1km	2km	5km	10km
05:39	11:19	28:16	56:33
15km	20km	Half Marathon	Marathon
1:24:49	1:53:06	1:59:18	3:58:36

Split by km

km	Time/km
1 km	05:39
2 km	11:19
3 km	16:58
4 km	22:37
0.2 km	23:45

Calculate your running speed

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