9km/h, my running speed on 4.5km 30:00

Time equivalence by distance

1km	2km	5km	10km
06:40	13:20	33:20	1:06:40
15km	20km	Half Marathon	Marathon
1:40:00	2:13:20	2:20:39	4:41:18

Split by km

km	Time/km
1 km	06:40
2 km	13:20
3 km	20:00
4 km	26:40
0.5 km	30:00

Calculate your running speed

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