Progress against the field
Between Rotterdam 2024 and Heerenveen 2026, Martijn Frijters lost 11:11 to the field.
The clock says 7:14 faster, but the races themselves got 18:25 quicker for everyone.
203 days between Heerenveen 2025 and Utrecht 2025 is the longest gap compared here, and the second race was 8:12 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.
Every race
8 races · 8 events
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Heerenveen14 May 2026Individual Open · Men1:25:36 PB183/315Beat 42%
↑ 29 days after Rotterdam 2026 0:34 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:13 faster on the clock, yet the race was 1:47 faster for everyone, so 0:34 was lost on the field.
The fieldCompare these two →1:47 faster This athlete1:13 faster -
Rotterdam15 Apr 2026Individual Open · Men1:26:49219/401Beat 45%
↑ 138 days after Utrecht 2025 2:41 better than the field Why ↓Close ↑
2:41 better than the field: 8:00 faster on the clock, against 5:19 faster for everyone.
The fieldCompare these two →5:19 faster This athlete8:00 faster -
Amsterdam21 Jan 2026Doubles Open · Men1:07:15 PB261/994Beat 74%
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Utrecht28 Nov 2025Individual Open · Men1:34:49889/1337Beat 34%
↑ 203 days after Heerenveen 2025 8:12 worse than the field Why ↓Close ↑
8:05 slower on the clock in a race that was 0:07 faster for everyone: 8:12 lost to the field.
The fieldCompare these two →0:07 faster This athlete8:05 slower -
Heerenveen9 May 2025Individual Open · Men1:26:44669/1217Beat 45%
↑ 71 days after Rotterdam 2025 0:13 worse than the field Faster on the clock, behind the field Why ↓Close ↑
2:16 faster on the clock looks better than it was: the race was 2:29 faster for everyone, which leaves this 0:13 behind the field.
The fieldCompare these two →2:29 faster This athlete2:16 faster -
Rotterdam27 Feb 2025Individual Open · Men1:29:00347/600Beat 42%
↑ 140 days after Amsterdam 2024 4:53 worse than the field Why ↓Close ↑
2:57 slower on the clock in a race that was 1:56 faster for everyone: 4:53 lost to the field.
The fieldCompare these two →1:56 faster This athlete2:57 slower -
Amsterdam10 Oct 2024Individual Open · Men1:26:03784/1539Beat 49%
↑ 187 days after Rotterdam 2024 0:00 better than the field Why ↓Close ↑
6:47 faster on the clock, and the race was 6:47 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →6:47 faster This athlete6:47 faster -
Rotterdam6 Apr 2024Individual Open · Men1:32:50758/1380Beat 45%