Progress against the field
Between Heerenveen 2025 and Utrecht 2025, Johan Tjassing lost 4:43 to the field.
The races barely moved for everyone else, so 4:36 slower on the clock is close to the whole story.
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
4 races · 3 events
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Heerenveen14 May 2026Doubles Open · Men1:18:47 PB332/535Beat 38%
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Heerenveen14 May 2026Doubles Open · Mixed1:28:11 PB343/461Beat 26%
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Utrecht28 Nov 2025Individual Open · Men1:29:56313/575Beat 46%
↑ 203 days after Heerenveen 2025 4:43 worse than the field Why ↓Close ↑
4:36 slower on the clock in a race that was 0:07 faster for everyone: 4:43 lost to the field.
The fieldCompare these two →0:07 faster This athlete4:36 slower -
Heerenveen9 May 2025Individual Open · Men1:25:20 PB160/325Beat 51%