Progress against the field
Jennifer Nielsen has gained 2:40 on the field from Phoenix 2026 to Washington DC 2026.
The races themselves barely changed, so 2:36 faster on the clock is the real picture.
The biggest step was New York 2026 → Stockholm 2026: 19:27 on the field in 21 days.
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
17 races · 10 events
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Boston8 Oct 2026Doubles Open · Mixed1:12:2944/373Beat 88%
↑ 133 days after New York 2026, with Nick Logan 2:38 worse than the field Why ↓Close ↑
2:38 behind the field: 0:29 slower on the clock, against 2:09 faster for everyone.
The fieldCompare these two →2:09 faster This pair0:29 slower -
Boston8 Oct 2026Doubles Open · Mixed1:10:26 PB41/263Beat 84%
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Washington DC3 Sep 2026Doubles Pro · Women1:27:07 PB139/223Beat 38%
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Washington DC3 Sep 2026Individual Pro · Women1:28:02 PB164/289Beat 43%
↑ 77 days after Stockholm 2026 0:02 worse than the field Why ↓Close ↑
1:56 faster on the clock, and the race was 1:58 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →1:58 faster This athlete1:56 faster -
Washington DC3 Sep 2026Doubles Open · Mixed1:11:2050/594Beat 92%
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Stockholm18 Jun 2026Individual Pro · Women1:29:58674/751Beat 10%
↑ 21 days after New York 2026 19:27 better than the field Why ↓Close ↑
19:27 better than the field: 20:24 faster on the clock, against 0:57 faster for everyone.
The fieldCompare these two →0:57 faster This athlete20:24 faster -
New York28 May 2026Relay · Women1:20:1837/155Beat 76%
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New York28 May 2026Doubles Open · Mixed1:12:0061/575Beat 89%
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New York28 May 2026Doubles Open · Mixed1:17:20142/602Beat 76%
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New York28 May 2026Individual Pro · Women1:50:22213/312Beat 32%
↑ 119 days after Phoenix 2026 16:45 worse than the field Why ↓Close ↑
19:44 slower on the clock in a race that was 2:59 slower for everyone: 16:45 lost to the field.
The fieldCompare these two →2:59 slower This athlete19:44 slower -
Miami3 Apr 2026Doubles Open · Women1:17:42 PB157/1037Beat 85%
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Phoenix29 Jan 2026Individual Pro · Women1:30:38197/294Beat 33%
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Phoenix29 Jan 2026Individual Open · Women1:26:41170/550Beat 69%
↑ 90 days after Atlanta 2025 4:47 worse than the field Why ↓Close ↑
4:47 behind the field: 1:01 slower on the clock, against 3:46 faster for everyone.
The fieldCompare these two →3:46 faster This athlete1:01 slower -
Atlanta31 Oct 2025Individual Open · Women1:25:40 PB143/660Beat 78%
↑ 35 days after Boston 2025 0:00 better than the field Why ↓Close ↑
Moved with the field: 2:26 faster on the clock, against 2:26 faster for everyone.
The fieldCompare these two →2:26 faster This athlete2:26 faster -
Boston26 Sep 2025Individual Open · Women1:28:06417/1290Beat 68%
↑ 119 days after New York 2025 0:55 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:26 faster on the clock, yet the race was 2:21 faster for everyone, so 0:55 was lost on the field.
The fieldCompare these two →2:21 faster This athlete1:26 faster -
New York30 May 2025Individual Open · Women1:29:32324/781Beat 59%
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Washington D.C. Open North American ChampionshipsDate unknownIndividual Open · Women1:46:00668/893Beat 25%