Progress against the field
Between Maastricht 2025 and Rotterdam 2026, Jennifer Joyner lost 3:24 to the field.
The clock says 1:09 faster, but the races themselves got 4:33 quicker for everyone.
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. The summary above covers Individual Pro · Women, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Maastricht19 Sep 2026Doubles Open · Mixed1:15:07180/687Beat 74%
↑ 241 days after Amsterdam 2026, with Peter Venhuizen 1:34 worse than the field Why ↓Close ↑
2:01 slower on the clock in a race that was 0:27 slower for everyone: 1:34 lost to the field.
The fieldCompare these two →0:27 slower This pair2:01 slower -
Rotterdam15 Apr 2026Individual Pro · Women1:30:54 PB84/128Beat 34%
↑ 208 days after Maastricht 2025 3:24 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:09 faster on the clock, yet the race was 4:33 faster for everyone, so 3:24 was lost on the field.
The fieldCompare these two →4:33 faster This athlete1:09 faster -
Amsterdam21 Jan 2026Doubles Open · Mixed1:13:06 PB336/1206Beat 72%
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Maastricht19 Sep 2025Individual Pro · Women1:32:0366/109Beat 39%
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Heerenveen9 May 2025Individual Open · Women1:22:29 PB86/571Beat 85%