Progress against the field
Donny Roelvink has gained 21:35 on the field from Rotterdam 2023 to Amsterdam 2026.
Over the same races everyone got 15:04 quicker, so 36:39 faster on the clock looks better than it was.
The longest gap between two races compared here, 720 days between Rotterdam 2023 and Heerenveen 2025, still ended 16:08 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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Amsterdam21 Jan 2026Individual Open · Men1:04:12 PB57/1620Beat 97%
↑ 54 days after Utrecht 2025 1:55 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:12 faster on the clock, yet the race was 5:07 faster for everyone, so 1:55 was lost on the field.
The fieldCompare these two →5:07 faster This athlete3:12 faster -
Utrecht28 Nov 2025Individual Open · Men1:07:2434/1337Beat 98%
↑ 70 days after Maastricht 2025 2:07 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:29 faster on the clock looks better than it was: the race was 3:36 faster for everyone, which leaves this 2:07 behind the field.
The fieldCompare these two →3:36 faster This athlete1:29 faster -
Rome26 Sep 2025Doubles Open · Men1:00:20 PB58/775Beat 93%
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Maastricht19 Sep 2025Individual Open · Men1:08:5362/1352Beat 95%
↑ 133 days after Heerenveen 2025 9:29 better than the field Why ↓Close ↑
7:47 faster on the clock in a race that was 1:42 slower for everyone: 9:29 better than the field.
The fieldCompare these two →1:42 slower This athlete7:47 faster -
Heerenveen9 May 2025Individual Open · Men1:16:4063/325Beat 81%
↑ 720 days after Rotterdam 2023 16:08 better than the field Why ↓Close ↑
24:11 faster on the clock, and the race was 8:03 faster for everyone, so 16:08 of it was this athlete.
The fieldCompare these two →8:03 faster This athlete24:11 faster -
Amsterdam10 Oct 2024Doubles Open · Mixed1:27:17 PB428/618Beat 31%
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Rotterdam20 May 2023Individual Open · Men1:40:51443/575Beat 23%