13.85km/h, my running speed on 4.2km 18:11

Time equivalence by distance

1km	2km	5km	10km
04:20	08:40	21:39	43:18
15km	20km	Half Marathon	Marathon
1:04:56	1:26:35	1:31:20	3:02:41

Split by km

km	Time/km
1 km	04:20
2 km	08:40
3 km	12:59
4 km	17:19
0.2 km	18:11

Calculate your running speed

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