18.75km/h, my running speed on 2.5km 08:00

Time equivalence by distance

1km	2km	5km	10km
03:12	06:24	16:00	32:00
15km	20km	Half Marathon	Marathon
48:00	1:04:00	1:07:31	2:15:01

Split by km

km	Time/km
1 km	03:12
2 km	06:24
0.5 km	08:00

Calculate your running speed

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