Progress against the field
Anieke Van Leeuwen and Sebastiaan Van Leeuwen have dropped 3:20 behind the field from Rotterdam 2025 to Amsterdam 2026.
The clock says 1:43 faster, but the races themselves got 5:03 quicker for everyone.
The longest gap between two races compared here, 204 days between Rotterdam 2025 and Maastricht 2025, cost 4:50 on 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 Doubles Open · Mixed, with Sebastiaan Van Leeuwen, the one raced most; every comparison is in the list below.
Every race
6 races · 6 events
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Amsterdam21 Jan 2026Doubles Open · Mixed1:12:28 PB302/1206Beat 75%
↑ 124 days after Maastricht 2025, with Sebastiaan Van Leeuwen 1:30 better than the field Why ↓Close ↑
1:30 better than the field: 8:20 faster on the clock, against 6:50 faster for everyone.
The fieldCompare these two →6:50 faster This pair8:20 faster -
Utrecht28 Nov 2025Doubles Open · Women1:20:19200/828Beat 76%
↑ 601 days after Rotterdam 2024, with Romy Brosky 9:44 worse than the field Why ↓Close ↑
2:29 slower on the clock in a race that was 7:15 faster for everyone: 9:44 lost to the field.
The fieldCompare these two →7:15 faster This pair2:29 slower -
Maastricht19 Sep 2025Doubles Open · Mixed1:20:48140/364Beat 62%
↑ 204 days after Rotterdam 2025, with Sebastiaan Van Leeuwen 4:50 worse than the field Why ↓Close ↑
4:50 behind the field: 6:37 slower on the clock, against 1:47 slower for everyone.
The fieldCompare these two →1:47 slower This pair6:37 slower -
Rotterdam27 Feb 2025Doubles Open · Mixed1:14:11142/707Beat 80%
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Rotterdam6 Apr 2024Doubles Open · Women1:17:50 PB71/564Beat 87%
↑ 154 days after Amsterdam 2023, with Romy Brosky 1:44 better than the field Why ↓Close ↑
3:35 faster on the clock, and the race was 1:51 faster for everyone, so 1:44 of it was this pair.
The fieldCompare these two →1:51 faster This pair3:35 faster -
Amsterdam4 Nov 2023Doubles Open · Women1:21:2591/319Beat 72%