Progress against the field
Martijn Kerver has dropped 14:12 behind the field from Heerenveen 2025 to Maastricht 2026.
Over the same races everyone got 6:41 quicker, so 7:31 slower on the clock looks better than it was.
241 days between Amsterdam 2026 and Maastricht 2026 is the longest gap compared here, and the second race was 10:58 behind 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. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
8 races · 8 events
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Maastricht19 Sep 2026Individual Open · Men1:28:16209/394Beat 47%
↑ 241 days after Amsterdam 2026 10:58 worse than the field Why ↓Close ↑
10:58 behind the field: 10:18 slower on the clock, against 0:40 faster for everyone.
The fieldCompare these two →0:40 faster This athlete10:18 slower -
Copenhagen13 Mar 2026Doubles Open · Mixed1:19:55166/282Beat 41%
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Amsterdam21 Jan 2026Individual Open · Men1:17:58 PB507/1620Beat 69%
↑ 40 days after Gent 2025 2:20 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:41 faster on the clock looks better than it was: the race was 3:01 faster for everyone, which leaves this 2:20 behind the field.
The fieldCompare these two →3:01 faster This athlete0:41 faster -
Gent12 Dec 2025Individual Open · Men1:18:39468/1428Beat 67%
↑ 217 days after Heerenveen 2025 0:54 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:06 faster on the clock looks better than it was: the race was 3:00 faster for everyone, which leaves this 0:54 behind the field.
The fieldCompare these two →3:00 faster This athlete2:06 faster -
Maastricht19 Sep 2025Doubles Open · Mixed1:25:54206/364Beat 43%
↑ 204 days after Rotterdam 2025, with Stefanie Ten Thije Boonkkamp 0:33 better than the field Slower on the clock, ahead of the field Why ↓Close ↑
1:14 slower on the clock, but the race was 1:47 slower for everyone, so this was 0:33 better than the field.
The fieldCompare these two →1:47 slower This pair1:14 slower -
Heerenveen9 May 2025Individual Open · Men1:20:45115/325Beat 65%
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Warsaw12 Apr 2025Doubles Open · Mixed1:17:40 PB136/288Beat 53%
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Rotterdam27 Feb 2025Doubles Open · Mixed1:24:40392/707Beat 45%