Progress against the field
Between Amsterdam 2023 and Rotterdam 2024, Koen Daelewyn and Ronny Hofenboom pulled 6:55 ahead of the field.
Over the same races everyone got 6:34 quicker, so 13:29 faster on the clock looks better than it was.
The biggest step was Amsterdam 2023 → Maastricht 2024: 6:21 on the field in 77 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. The summary above covers Doubles Open · Men, with Ronny Hofenboom, the one raced most; every comparison is in the list below.
Every race
11 races · 11 events
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Mechelen26 Mar 2026Doubles Pro · Men1:02:17 PB171/493Beat 65%
↑ 64 days after Amsterdam 2026, with Ronny Hofenboom 0:02 better than the field Why ↓Close ↑
0:45 faster on the clock, and the race was 0:43 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →0:43 faster This pair0:45 faster -
Amsterdam21 Jan 2026Doubles Pro · Men1:03:02101/298Beat 66%
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Belgium5 Apr 2025Doubles Pro · Men1:04:3218/122Beat 85%
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Frankfurt14 Dec 2024Doubles Pro · Men1:06:0853/137Beat 61%
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Amsterdam10 Oct 2024Doubles Pro · Men1:06:5242/144Beat 71%
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Rotterdam6 Apr 2024Doubles Open · Men1:09:03 PB126/722Beat 83%
↑ 77 days after Maastricht 2024, with Ronny Hofenboom 0:34 better than the field Why ↓Close ↑
0:34 better than the field: 2:44 faster on the clock, against 2:10 faster for everyone.
The fieldCompare these two →2:10 faster This pair2:44 faster -
Maastricht20 Jan 2024Doubles Open · Men1:11:4795/288Beat 67%
↑ 77 days after Amsterdam 2023, with Ronny Hofenboom 6:21 better than the field Why ↓Close ↑
10:45 faster on the clock, and the race was 4:24 faster for everyone, so 6:21 of it was this pair.
The fieldCompare these two →4:24 faster This pair10:45 faster -
Amsterdam4 Nov 2023Doubles Open · Men1:22:32272/411Beat 34%
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Amsterdam22 Oct 2022Individual Open · Men1:18:07 PB112/561Beat 80%
↑ 231 days after Maastricht 2022 1:20 better than the field Why ↓Close ↑
1:20 better than the field: 5:38 faster on the clock, against 4:18 faster for everyone.
The fieldCompare these two →4:18 faster This athlete5:38 faster -
Maastricht5 Mar 2022Individual Open · Men1:23:45116/243Beat 52%
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World Championships NiceDate unknownDoubles Pro · Men1:09:09327/387Beat 16%