Progress against the field
Between Amsterdam 2022 and Maastricht 2025, Niek Janssen pulled 25:15 ahead of the field.
Over the same races everyone got 3:18 quicker, so 28:33 faster on the clock looks better than it was.
The longest gap between two races compared here, 853 days between Rotterdam 2023 and Maastricht 2025, still ended 8:12 ahead of 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
3 races · 3 events
-
Maastricht19 Sep 2025Individual Open · Men1:29:40 PB338/584Beat 42%
↑ 853 days after Rotterdam 2023 8:12 better than the field Why ↓Close ↑
9:33 faster on the clock, and the race was 1:21 faster for everyone, so 8:12 of it was this athlete.
The fieldCompare these two →1:21 faster This athlete9:33 faster -
Rotterdam20 May 2023Individual Open · Men1:39:13429/575Beat 25%
↑ 210 days after Amsterdam 2022 17:03 better than the field Why ↓Close ↑
19:00 faster on the clock, and the race was 1:57 faster for everyone, so 17:03 of it was this athlete.
The fieldCompare these two →1:57 faster This athlete19:00 faster -
Amsterdam22 Oct 2022Individual Open · Men1:58:13536/561Beat 5%