Progress against the field
Between Maastricht 2024 and Heerenveen 2025, Mirjam De Jong and Iwan De Jong lost 5:45 to the field.
Over the same races everyone got 6:36 quicker, so 0:51 faster on the clock looks better than it was.
211 days between Amsterdam 2024 and Heerenveen 2025 is the longest gap compared here, and the second race was 5:49 behind 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 · 5 events
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London Excel4 Dec 2025Doubles Open · Mixed1:07:58181/1372Beat 87%
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Heerenveen9 May 2025Individual Open · Women1:19:33 PB31/183Beat 83%
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Heerenveen9 May 2025Doubles Open · Mixed1:07:0827/492Beat 95%
↑ 211 days after Amsterdam 2024, with Iwan De Jong 5:49 worse than the field Why ↓Close ↑
5:49 behind the field: 3:18 slower on the clock, against 2:31 faster for everyone.
The fieldCompare these two →2:31 faster This pair3:18 slower -
Amsterdam10 Oct 2024Doubles Open · Mixed1:03:50 PB14/376Beat 96%
↑ 187 days after Rotterdam 2024, with Iwan De Jong 0:04 better than the field Why ↓Close ↑
2:05 faster on the clock, and the race was 2:01 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →2:01 faster This pair2:05 faster -
Rotterdam6 Apr 2024Doubles Open · Mixed1:05:5526/534Beat 95%
↑ 77 days after Maastricht 2024, with Iwan De Jong 0:00 better than the field Why ↓Close ↑
2:04 faster on the clock, and the race was 2:04 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →2:04 faster This pair2:04 faster -
Maastricht20 Jan 2024Doubles Open · Mixed1:07:5920/230Beat 91%