Progress against the field
Between Heerenveen 2025 and Rotterdam 2026, Sandrino Vonsee pulled 5:52 ahead of the field.
Over the same races everyone got 6:10 quicker, so 12:02 faster on the clock looks better than it was.
The longest gap between two races compared here, 257 days between Heerenveen 2025 and Amsterdam 2026, still ended 4:22 ahead of the field.
How this is worked out ⓘ
A finish time moves for two reasons: the athlete, and the race — its course, its floor, its day. For each pair of races in a row in one category, we take everyone who raced both and use the middle of how much they moved (the median) as "the race". Whatever is left is the athlete. Doubles are compared only when the same two people raced both, and told as the pair's; relays are left out. A pair with fewer than 15 athletes in common is not shown.
Every race
7 races · 7 events
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Berlin22 May 2026Doubles Open · Men1:02:5525/371Beat 93%
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Heerenveen14 May 2026Doubles Open · Men1:01:48 PB33/434Beat 92%
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Rotterdam15 Apr 2026Individual Open · Men1:13:11 PB52/401Beat 87%
↑ 20 days after Mechelen 2026 7:48 better than the field Why ↓Close ↑
The race was 0:21 slower for everyone and the clock still says 7:27 faster: 7:48 gained on the field.
The fieldCompare these two →0:21 slower This athlete7:27 faster -
Mechelen26 Mar 2026Individual Open · Men1:20:38604/1363Beat 56%
↑ 64 days after Amsterdam 2026 6:18 worse than the field Why ↓Close ↑
6:18 behind the field: 3:54 slower on the clock, against 2:24 faster for everyone.
The fieldCompare these two →2:24 faster This athlete3:54 slower -
Amsterdam21 Jan 2026Individual Open · Men1:16:44136/570Beat 76%
↑ 257 days after Heerenveen 2025 4:22 better than the field Why ↓Close ↑
4:22 better than the field: 8:29 faster on the clock, against 4:07 faster for everyone.
The fieldCompare these two →4:07 faster This athlete8:29 faster -
Heerenveen9 May 2025Individual Open · Men1:25:13608/1217Beat 50%
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Amsterdam10 Oct 2024Doubles Open · Men1:15:11142/325Beat 56%