Progress against the field
Between Rotterdam 2026 and Maastricht 2026, Bart De Groot pulled 2:59 ahead of the field.
The races barely moved for everyone else, so 3:20 faster on the clock is close to the whole story.
The largest gain on the field came from Heerenveen 2026 → Maastricht 2026: 7:06 in 128 days.
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
9 races · 7 events
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Maastricht19 Sep 2026Individual Open · Men1:11:55 PB156/1119Beat 86%
↑ 128 days after Heerenveen 2026 7:06 better than the field Why ↓Close ↑
5:40 faster on the clock in a race that was 1:26 slower for everyone: 7:06 better than the field.
The fieldCompare these two →1:26 slower This athlete5:40 faster -
Maastricht19 Sep 2026Doubles Open · Men58:51 PB11/457Beat 98%
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Tenerife4 Sep 2026Doubles Open · Men1:03:5039/544Beat 93%
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Heerenveen14 May 2026Individual Open · Men1:17:35299/966Beat 69%
↑ 29 days after Rotterdam 2026 4:07 worse than the field Why ↓Close ↑
2:20 slower on the clock in a race that was 1:47 faster for everyone: 4:07 lost to the field.
The fieldCompare these two →1:47 faster This athlete2:20 slower -
Rotterdam15 Apr 2026Doubles Open · Men58:5919/674Beat 97%
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Rotterdam15 Apr 2026Individual Open · Men1:15:15106/556Beat 81%
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Mechelen26 Mar 2026Doubles Pro · Men1:02:21173/493Beat 65%
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Amsterdam21 Jan 2026Doubles Pro · Men1:09:18182/298Beat 39%
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Stockholm18 Dec 2025Doubles Pro · Men1:01:02 PB49/253Beat 81%