15.02km/h, my running speed on 2.5km 09:59

Time equivalence by distance

1km	2km	5km	10km
03:60	07:59	19:58	39:56
15km	20km	Half Marathon	Marathon
59:54	1:19:52	1:24:15	2:48:30

Split by km

km	Time/km
1 km	03:60
2 km	07:59
0.5 km	09:59

Calculate your running speed

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