Progress against the field
From Paris 2024 to Bordeaux 2025, Sylvie Delfosse has moved with the field: what changed on the clock changed for everyone.
Over the same races everyone got 4:43 quicker, so 4:30 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. The summary above covers Individual Open · Women, the one raced most; every comparison is in the list below.
Every race
8 races · 8 events
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Mechelen26 Mar 2026Doubles Open · Women1:37:17826/1017Beat 19%
↑ 104 days after Gent 2025, with Valentine Marrella 11:31 worse than the field Why ↓Close ↑
6:47 slower on the clock in a race that was 4:44 faster for everyone: 11:31 lost to the field.
The fieldCompare these two →4:44 faster This pair6:47 slower -
Gent12 Dec 2025Doubles Open · Women1:30:30 PB563/882Beat 36%
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Bordeaux20 Nov 2025Individual Open · Women1:49:57 PB558/672Beat 17%
↑ 376 days after Paris 2024 0:13 worse than the field Faster on the clock, behind the field Why ↓Close ↑
4:30 faster on the clock looks better than it was: the race was 4:43 faster for everyone, which leaves this 0:13 behind the field.
The fieldCompare these two →4:43 faster This athlete4:30 faster -
Rome26 Sep 2025Doubles Open · Women1:30:48493/673Beat 27%
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Maastricht19 Sep 2025Doubles Open · Mixed1:26:12 PB349/658Beat 47%
↑ 204 days after Rotterdam 2025, with Loïc Bortolotto 2:59 better than the field Why ↓Close ↑
The race was 1:47 slower for everyone and the clock still says 1:12 faster: 2:59 gained on the field.
The fieldCompare these two →1:47 slower This pair1:12 faster -
Rotterdam27 Feb 2025Doubles Open · Mixed1:27:24138/220Beat 37%
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Paris9 Nov 2024Individual Open · Women1:54:27633/747Beat 15%
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NiceDate unknownDoubles Open · Women1:39:02142/168Beat 16%