Progress against the field
Ian Sloot has gained 2:01 on the field from Heerenveen 2025 to Amsterdam 2026.
The clock says 7:15 faster, but the races themselves got 5:14 quicker for everyone.
203 days between Heerenveen 2025 and Utrecht 2025 is the longest gap compared here, and the second race was 8:46 better than 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
5 races · 5 events
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Heerenveen14 May 2026Doubles Open · Mixed1:10:57 PB89/461Beat 81%
↑ 237 days after Maastricht 2025, with Robin de Lange 1:34 worse than the field Faster on the clock, behind the field Why ↓Close ↑
5:34 faster on the clock, yet the race was 7:08 faster for everyone, so 1:34 was lost on the field.
The fieldCompare these two →7:08 faster This pair5:34 faster -
Amsterdam21 Jan 2026Individual Open · Men1:25:19904/1620Beat 44%
↑ 54 days after Utrecht 2025 6:45 worse than the field Why ↓Close ↑
1:38 slower on the clock in a race that was 5:07 faster for everyone: 6:45 lost to the field.
The fieldCompare these two →5:07 faster This athlete1:38 slower -
Utrecht28 Nov 2025Individual Open · Men1:23:41 PB467/1337Beat 65%
↑ 203 days after Heerenveen 2025 8:46 better than the field Why ↓Close ↑
8:53 faster on the clock, and the race was 0:07 faster for everyone, so 8:46 of it was this athlete.
The fieldCompare these two →0:07 faster This athlete8:53 faster -
Maastricht19 Sep 2025Doubles Open · Mixed1:16:3190/364Beat 75%
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Heerenveen9 May 2025Individual Open · Men1:32:34845/1217Beat 31%