18km/h, my running speed on 12km 40:00

Time equivalence by distance

1km	2km	5km	10km
03:20	06:40	16:40	33:20
15km	20km	Half Marathon	Marathon
49:60	1:06:40	1:10:19	2:20:39

Split by km

km	Time/km
1 km	03:20
2 km	06:40
3 km	09:60
4 km	13:20
5 km	16:40
6 km	19:60
7 km	23:20
8 km	26:40
9 km	29:60
10 km	33:20
11 km	36:40
12 km	39:60

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