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How is it possible that someone has a duration of for example 2 hours, has an hour speed of 28km/h but has a total distance of 70 km?

http://www.gps-speedsurfing.com/default.aspx?mnu=user&val=118160&uid=4037

Just an example I have seen it more often.

GPS TOP 10 2024
1	Raigo Piho		100,70
2	Adam Mróz		97,40
3	Taho-Jaan Truus		96,68
4	Boris Ljubtšenko		96,28
5	Henrik Mård		94,97
6	Valde Viiding		94,10
7	Olavi Nõmm		92,50
8	Andre Tampõld		89,81
9	Rumm Ranno		88,89
10	Erkki Soosaar		86,31
	..More..

No data found

De laatste sessies
1	Kai Mäkelä		31,28
2	Ville Mertanen		89,18
3	Kai Mäkelä		61,77
4	Feodor Gurvits		64,02
5	Rob Myles		66,53
6	Tiit Tasane		58,83
7	Valde Viiding		82,67
8	Cerly Aulik		62,72
9	Karmo Koivutalu		75,74
10	Erkki Soosaar		85,29
11	Kai Ottmar Schröder		80,77
12	Bianka Micke		34,08
13	Bianka Micke		40,20
14	Valde Viiding		83,31
15	Valde Viiding		94,10
16	Cerly Aulik		78,31
17	Olavi Nõmm		92,50
18	Cerly Aulik		72,23
19	Raul Kivi		73,65
20	Tiit Tasane		59,87
	..More..

Laatst behaalde PR's
1	Ville Mertanen		89,18
2	Kai Ottmar Schröder		80,77
3	Eleri Birk		67,46
4	Tiit Tasane		63,91
5	Ingeldrin Aug		71,64
6	Helle Tiib		69,86
7	Annika Tiib		69,26
8	Erik Karelfelt		58,73
9	Andre Tiib		71,08
10	Jüri Kaldoja		80,41