12.29km/h, my running speed on 2.1km 10:15

Time equivalence by distance

1km	2km	5km	10km
04:53	09:46	24:24	48:49
15km	20km	Half Marathon	Marathon
1:13:13	1:37:37	1:42:58	3:25:57

Split by km

km	Time/km
1 km	04:53
2 km	09:46
0.1 km	10:15

Calculate your running speed

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