Progress against the field
From Belgium 2025 to Rotterdam 2026, Hans Grootendorst got 9:24 faster than the field.
Over the same races everyone got 5:42 quicker, so 15:06 faster on the clock looks better than it was.
The longest gap between two races compared here, 237 days between Belgium 2025 and Utrecht 2025, still ended 12:46 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
3 races · 3 events
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Rotterdam15 Apr 2026Individual Open · Men1:18:46 PB162/570Beat 72%
↑ 138 days after Utrecht 2025 3:22 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:57 faster on the clock, yet the race was 5:19 faster for everyone, so 3:22 was lost on the field.
The fieldCompare these two →5:19 faster This athlete1:57 faster -
Utrecht28 Nov 2025Individual Open · Men1:20:43365/1337Beat 73%
↑ 237 days after Belgium 2025 12:46 better than the field Why ↓Close ↑
12:46 better than the field: 13:09 faster on the clock, against 0:23 faster for everyone.
The fieldCompare these two →0:23 faster This athlete13:09 faster -
Belgium5 Apr 2025Individual Open · Men1:33:521145/1638Beat 30%