Progress against the field
From Amsterdam 2023 to Heerenveen 2025, Toon Bolten got 2:28 faster than the field.
The clock says 9:14 faster, but the races themselves got 6:46 quicker for everyone.
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 Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
6 races · 6 events
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Heerenveen14 May 2026Doubles Open · Men1:03:5168/535Beat 87%
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Rotterdam15 Apr 2026Doubles Open · Men1:02:21 PB52/674Beat 92%
↑ 412 days after Rotterdam 2025, with Pelle Staub 0:37 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:56 faster on the clock, yet the race was 2:33 faster for everyone, so 0:37 was lost on the field.
The fieldCompare these two →2:33 faster This pair1:56 faster -
Amsterdam21 Jan 2026Doubles Open · Mixed1:14:40 PB410/1206Beat 66%
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Heerenveen9 May 2025Individual Open · Men1:14:42 PB237/1217Beat 81%
↑ 552 days after Amsterdam 2023 2:28 better than the field Why ↓Close ↑
2:28 better than the field: 9:14 faster on the clock, against 6:46 faster for everyone.
The fieldCompare these two →6:46 faster This athlete9:14 faster -
Rotterdam27 Feb 2025Doubles Open · Men1:04:1733/316Beat 90%
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Amsterdam4 Nov 2023Individual Open · Men1:23:56358/1079Beat 67%