15.33km/h, my running speed on 2.5km 09:47

Time equivalence by distance

1km	2km	5km	10km
03:55	07:50	19:34	39:08
15km	20km	Half Marathon	Marathon
58:42	1:18:16	1:22:34	2:45:07

Split by km

km	Time/km
1 km	03:55
2 km	07:50
0.5 km	09:47

Calculate your running speed

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