Progress against the field
Daan Kettenburg has gained 7:36 on the field from Frankfurt 2023 to Rotterdam 2026.
The clock says 18:51 faster, but the races themselves got 11:15 quicker for everyone.
The biggest step was Amsterdam 2024 → Rotterdam 2025: 4:58 on the field in 140 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
7 races · 7 events
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Berlin22 May 2026Doubles Pro · Men1:05:07111/396Beat 72%
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Heerenveen14 May 2026Doubles Open · Men1:00:43 PB29/535Beat 95%
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Rotterdam15 Apr 2026Individual Open · Men1:10:35 PB121/1192Beat 90%
↑ 412 days after Rotterdam 2025 0:50 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:18 faster on the clock looks better than it was: the race was 4:08 faster for everyone, which leaves this 0:50 behind the field.
The fieldCompare these two →4:08 faster This athlete3:18 faster -
Heerenveen9 May 2025Doubles Pro · Men1:01:58 PB22/92Beat 76%
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Rotterdam27 Feb 2025Individual Open · Men1:13:53170/1283Beat 87%
↑ 140 days after Amsterdam 2024 4:58 better than the field Why ↓Close ↑
4:58 better than the field: 6:54 faster on the clock, against 1:56 faster for everyone.
The fieldCompare these two →1:56 faster This athlete6:54 faster -
Amsterdam10 Oct 2024Individual Open · Men1:20:47549/1539Beat 64%
↑ 306 days after Frankfurt 2023 3:28 better than the field Why ↓Close ↑
3:28 better than the field: 8:39 faster on the clock, against 5:11 faster for everyone.
The fieldCompare these two →5:11 faster This athlete8:39 faster -
Frankfurt9 Dec 2023Individual Open · Men1:29:26515/843Beat 39%