15.57km/h, my running speed on 5.5km 21:11

Time equivalence by distance

1km	2km	5km	10km
03:51	07:42	19:15	38:31
15km	20km	Half Marathon	Marathon
57:46	1:17:02	1:21:15	2:42:31

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
0.5 km	21:11

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