Progress against the field
From Maastricht 2022 to Heerenveen 2026, the field gained 1:24 on Remco Siero.
Over the same races everyone got 26:22 quicker, so 24:58 faster on the clock looks better than it was.
441 days between Maastricht 2022 and Rotterdam 2023 is the longest gap compared here, and the second race was 1:45 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.
Every race
8 races · 8 events
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Heerenveen14 May 2026Individual Open · Men1:16:14 PB261/966Beat 73%
↑ 167 days after Utrecht 2025 3:49 better than the field Why ↓Close ↑
3:49 better than the field: 10:56 faster on the clock, against 7:07 faster for everyone.
The fieldCompare these two →7:07 faster This athlete10:56 faster -
Utrecht28 Nov 2025Individual Open · Men1:27:10267/575Beat 54%
↑ 203 days after Heerenveen 2025 3:31 better than the field Why ↓Close ↑
3:31 better than the field: 3:38 faster on the clock, against 0:07 faster for everyone.
The fieldCompare these two →0:07 faster This athlete3:38 faster -
Heerenveen9 May 2025Individual Open · Men1:30:48201/325Beat 38%
↑ 34 days after Belgium 2025 0:29 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:59 faster on the clock, yet the race was 2:28 faster for everyone, so 0:29 was lost on the field.
The fieldCompare these two →2:28 faster This athlete1:59 faster -
Belgium5 Apr 2025Individual Open · Men1:32:471099/1638Beat 33%
↑ 364 days after Rotterdam 2024 8:46 worse than the field Why ↓Close ↑
1:46 slower on the clock in a race that was 7:00 faster for everyone: 8:46 lost to the field.
The fieldCompare these two →7:00 faster This athlete1:46 slower -
Rotterdam6 Apr 2024Individual Open · Men1:31:01677/1380Beat 51%
↑ 154 days after Amsterdam 2023 0:10 better than the field Why ↓Close ↑
2:40 faster on the clock, and the race was 2:30 faster for everyone, so 0:10 of it was this athlete.
The fieldCompare these two →2:30 faster This athlete2:40 faster -
Amsterdam4 Nov 2023Individual Open · Men1:33:41655/1079Beat 39%
↑ 168 days after Rotterdam 2023 1:24 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:13 faster on the clock, yet the race was 2:37 faster for everyone, so 1:24 was lost on the field.
The fieldCompare these two →2:37 faster This athlete1:13 faster -
Rotterdam20 May 2023Individual Open · Men1:34:54371/575Beat 36%
↑ 441 days after Maastricht 2022 1:45 better than the field Why ↓Close ↑
1:45 better than the field: 6:18 faster on the clock, against 4:33 faster for everyone.
The fieldCompare these two →4:33 faster This athlete6:18 faster -
Maastricht5 Mar 2022Individual Open · Men1:41:12198/243Beat 19%