Progress against the field
Between Rotterdam 2025 and Maastricht 2026, Gert Jan de Jong pulled 0:22 ahead of the field.
Over the same races everyone got 8:01 quicker, so 8:23 faster on the clock looks better than it was.
203 days between Heerenveen 2025 and Utrecht 2025 is the longest gap compared here, and the second race was 5:35 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
6 races · 6 events
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Maastricht19 Sep 2026Individual Open · Men1:14:1892/546Beat 83%
↑ 157 days after Rotterdam 2026 2:05 worse than the field Why ↓Close ↑
1:59 slower on the clock in a race that was 0:06 faster for everyone: 2:05 lost to the field.
The fieldCompare these two →0:06 faster This athlete1:59 slower -
Rotterdam15 Apr 2026Individual Open · Men1:12:19 PB71/570Beat 88%
↑ 138 days after Utrecht 2025 3:58 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:21 faster on the clock, yet the race was 5:19 faster for everyone, so 3:58 was lost on the field.
The fieldCompare these two →5:19 faster This athlete1:21 faster -
Amsterdam21 Jan 2026Individual Pro · Men1:20:36 PB68/107Beat 36%
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Utrecht28 Nov 2025Individual Open · Men1:13:4065/575Beat 89%
↑ 203 days after Heerenveen 2025 5:35 better than the field Why ↓Close ↑
5:42 faster on the clock, and the race was 0:07 faster for everyone, so 5:35 of it was this athlete.
The fieldCompare these two →0:07 faster This athlete5:42 faster -
Heerenveen9 May 2025Individual Open · Men1:19:2293/325Beat 71%
↑ 71 days after Rotterdam 2025 0:50 better than the field Why ↓Close ↑
0:50 better than the field: 3:19 faster on the clock, against 2:29 faster for everyone.
The fieldCompare these two →2:29 faster This athlete3:19 faster -
Rotterdam27 Feb 2025Individual Open · Men1:22:41231/600Beat 62%