Progress against the field
Between Rotterdam 2024 and Rotterdam 2026, Roy Dappers pulled 5:59 ahead of the field.
The clock says 20:49 faster, but the races themselves got 14:50 quicker for everyone.
The biggest step was Rotterdam 2024 → Amsterdam 2024: 6:10 on the field in 187 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
6 races · 6 events
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Rotterdam15 Apr 2026Individual Open · Men1:06:59 PB29/570Beat 95%
↑ 375 days after Belgium 2025 0:40 better than the field Why ↓Close ↑
7:07 faster on the clock, and the race was 6:27 faster for everyone, so 0:40 of it was this athlete.
The fieldCompare these two →6:27 faster This athlete7:07 faster -
Utrecht28 Nov 2025Doubles Open · Mixed1:15:2574/381Beat 81%
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Heerenveen9 May 2025Doubles Open · Mixed1:05:57 PB18/492Beat 96%
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Belgium5 Apr 2025Individual Open · Men1:14:06313/1638Beat 81%
↑ 177 days after Amsterdam 2024 0:51 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:45 faster on the clock, yet the race was 1:36 faster for everyone, so 0:51 was lost on the field.
The fieldCompare these two →1:36 faster This athlete0:45 faster -
Amsterdam10 Oct 2024Individual Open · Men1:14:51290/1539Beat 81%
↑ 187 days after Rotterdam 2024 6:10 better than the field Why ↓Close ↑
12:57 faster on the clock, and the race was 6:47 faster for everyone, so 6:10 of it was this athlete.
The fieldCompare these two →6:47 faster This athlete12:57 faster -
Rotterdam6 Apr 2024Individual Open · Men1:27:48530/1380Beat 62%