19km/h, my running speed on 3.8km 12:00

Time equivalence by distance

1km	2km	5km	10km
03:09	06:19	15:47	31:35
15km	20km	Half Marathon	Marathon
47:22	1:03:09	1:06:37	2:13:15

Split by km

km	Time/km
1 km	03:09
2 km	06:19
3 km	09:28
0.8 km	12:00

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