Progress against the field
Roos Kolthof has dropped 0:45 behind the field from Rotterdam 2025 to Rotterdam 2026.
Over the same races everyone got 0:58 quicker, so 0:13 faster on the clock looks better than it was.
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
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Rotterdam15 Apr 2026Individual Open · Women1:25:45 PB65/236Beat 73%
↑ 412 days after Rotterdam 2025 0:45 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:13 faster on the clock looks better than it was: the race was 0:58 faster for everyone, which leaves this 0:45 behind the field.
The fieldCompare these two →0:58 faster This athlete0:13 faster -
Rotterdam27 Feb 2025Individual Open · Women1:25:5851/203Beat 75%
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Amsterdam10 Oct 2024Doubles Open · Mixed1:14:30 PB152/618Beat 75%