13.92km/h, my running speed on 4.1km 17:40

Time equivalence by distance

1km	2km	5km	10km
04:19	08:37	21:33	43:05
15km	20km	Half Marathon	Marathon
1:04:38	1:26:11	1:30:54	3:01:49

Split by km

km	Time/km
1 km	04:19
2 km	08:37
3 km	12:56
4 km	17:14
0.1 km	17:40

Calculate your running speed

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