12.47km/h, my running speed on 4.19km 20:09

Time equivalence by distance

1km	2km	5km	10km
04:49	09:37	24:03	48:05
15km	20km	Half Marathon	Marathon
1:12:08	1:36:11	1:41:27	3:22:55

Split by km

km	Time/km
1 km	04:49
2 km	09:37
3 km	14:26
4 km	19:14
0.19 km	20:09

Calculate your running speed

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