12.86km/h, my running speed on 3.9km 18:11

Time equivalence by distance

1km	2km	5km	10km
04:40	09:19	23:19	46:37
15km	20km	Half Marathon	Marathon
1:09:56	1:33:15	1:38:22	3:16:44

Split by km

km	Time/km
1 km	04:40
2 km	09:19
3 km	13:59
0.9 km	18:11

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