Progress against the field
Between Belgium 2025 and Rotterdam 2026, Nico Zwijnenburg and Stefan Zwijnenburg pulled 3:20 ahead of the field.
Over the same races everyone got 1:25 quicker, so 4:45 faster on the clock looks better than it was.
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
5 races · 5 events
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Heerenveen14 May 2026Doubles Pro · Men1:11:47 PB187/315Beat 41%
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Rotterdam15 Apr 2026Doubles Open · Men1:10:18 PB243/674Beat 64%
↑ 375 days after Belgium 2025, with Stefan Zwijnenburg 3:20 better than the field Why ↓Close ↑
3:20 better than the field: 4:45 faster on the clock, against 1:25 faster for everyone.
The fieldCompare these two →1:25 faster This pair4:45 faster -
Mechelen26 Mar 2026Doubles Open · Men1:12:57193/402Beat 52%
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Utrecht28 Nov 2025Doubles Open · Men1:15:39455/879Beat 48%
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Belgium5 Apr 2025Doubles Open · Men1:15:03476/898Beat 47%