Progress against the field
Tim van Leeuwen and Tiemo van Leeuwen have dropped 10:27 behind the field from Utrecht 2025 to Heerenveen 2026.
The clock says 5:55 slower, but the races themselves got 4:32 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 Doubles Open · Men, with Tiemo van Leeuwen, the one raced most; every comparison is in the list below.
Every race
7 races · 7 events
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Heerenveen14 May 2026Doubles Open · Men1:27:46451/535Beat 16%
↑ 29 days after Rotterdam 2026, with Tiemo van Leeuwen 1:09 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:21 faster on the clock looks better than it was: the race was 1:30 faster for everyone, which leaves this 1:09 behind the field.
The fieldCompare these two →1:30 faster This pair0:21 faster -
Rotterdam15 Apr 2026Doubles Open · Men1:28:07592/674Beat 12%
↑ 138 days after Utrecht 2025, with Tiemo van Leeuwen 9:18 worse than the field Why ↓Close ↑
6:16 slower on the clock in a race that was 3:02 faster for everyone: 9:18 lost to the field.
The fieldCompare these two →3:02 faster This pair6:16 slower -
Utrecht28 Nov 2025Doubles Open · Men1:21:51273/461Beat 41%
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Heerenveen9 May 2025Doubles Open · Men1:18:06 PB336/529Beat 37%
↑ 34 days after Belgium 2025, with Raymond Folker 0:03 worse than the field Why ↓Close ↑
1:55 faster on the clock, and the race was 1:58 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →1:58 faster This pair1:55 faster -
Belgium5 Apr 2025Doubles Open · Men1:20:01655/898Beat 27%
↑ 177 days after Amsterdam 2024, with Raymond Folker 2:28 better than the field Why ↓Close ↑
5:23 faster on the clock, and the race was 2:55 faster for everyone, so 2:28 of it was this pair.
The fieldCompare these two →2:55 faster This pair5:23 faster -
Rotterdam27 Feb 2025Doubles Open · Men1:20:58509/733Beat 31%
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Amsterdam10 Oct 2024Doubles Open · Men1:25:24686/855Beat 20%