12.63km/h, my running speed on 4km 19:00

Time equivalence by distance

1km	2km	5km	10km
04:45	09:30	23:45	47:30
15km	20km	Half Marathon	Marathon
1:11:15	1:35:00	1:40:13	3:20:26

Split by km

km	Time/km
1 km	04:45
2 km	09:30
3 km	14:15
4 km	19:00

Calculate your running speed

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