Progress against the field
Between Utrecht 2025 and Amsterdam 2026, Sam Boorsma lost 3:53 to the field.
Over the same races everyone got 4:50 quicker, so 0:57 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
6 races · 6 events
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Amsterdam21 Jan 2026Individual Pro · Women1:23:41 PB69/128Beat 46%
↑ 54 days after Utrecht 2025 3:53 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:57 faster on the clock, yet the race was 4:50 faster for everyone, so 3:53 was lost on the field.
The fieldCompare these two →4:50 faster This athlete0:57 faster -
Utrecht28 Nov 2025Individual Pro · Women1:24:3818/67Beat 73%
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Maastricht19 Sep 2025Doubles Open · Women1:08:203/329Beat 99%
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Malaga21 Mar 2025Doubles Open · Women1:07:23 PB8/264Beat 97%
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Rotterdam27 Feb 2025Individual Open · Women1:12:03 PB12/506Beat 98%
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Amsterdam10 Oct 2024Doubles Open · Women1:12:3442/657Beat 94%