13.95km/h, my running speed on 4km 17:12

Time equivalence by distance

1km	2km	5km	10km
04:18	08:36	21:30	43:00
15km	20km	Half Marathon	Marathon
1:04:30	1:26:00	1:30:43	3:01:26

Split by km

km	Time/km
1 km	04:18
2 km	08:36
3 km	12:54
4 km	17:12

Calculate your running speed

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