Progress against the field
Robin Zijlstra has gained 8:33 on the field from Heerenveen 2025 to Heerenveen 2026.
The clock says 13:23 faster, but the races themselves got 4:50 quicker for everyone.
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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
4 races · 4 events
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Heerenveen14 May 2026Individual Open · Men1:12:43 PB178/966Beat 82%
↑ 370 days after Heerenveen 2025 8:33 better than the field Why ↓Close ↑
13:23 faster on the clock, and the race was 4:50 faster for everyone, so 8:33 of it was this athlete.
The fieldCompare these two →4:50 faster This athlete13:23 faster -
Rotterdam15 Apr 2026Doubles Open · Men1:07:12151/674Beat 78%
↑ 84 days after Amsterdam 2026, with Julian Zeinstra 1:13 worse than the field Why ↓Close ↑
1:18 slower on the clock in a race that was 0:05 slower for everyone: 1:13 lost to the field.
The fieldCompare these two →0:05 slower This pair1:18 slower -
Amsterdam21 Jan 2026Doubles Open · Men1:05:54 PB53/344Beat 85%
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Heerenveen9 May 2025Individual Open · Men1:26:06648/1217Beat 47%