15.24km/h, my running speed on 10.5km 41:20

Time equivalence by distance

1km	2km	5km	10km
03:56	07:52	19:41	39:22
15km	20km	Half Marathon	Marathon
59:03	1:18:44	1:23:03	2:46:06

Split by km

km	Time/km
1 km	03:56
2 km	07:52
3 km	11:49
4 km	15:45
5 km	19:41
6 km	23:37
7 km	27:33
8 km	31:30
9 km	35:26
10 km	39:22
0.5 km	41:20

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