15.58km/h, my running speed on 10km 38:30

Time equivalence by distance

1km	2km	5km	10km
03:51	07:42	19:15	38:30
15km	20km	Half Marathon	Marathon
57:45	1:17:00	1:21:13	2:42:27

Split by km

km	Time/km
1 km	03:51
2 km	07:42
3 km	11:33
4 km	15:24
5 km	19:15
6 km	23:06
7 km	26:57
8 km	30:48
9 km	34:39
10 km	38:30

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