Progress against the field
Between Cape Town 2025 and Johannesburg 2025, Chelsea Muller and Simon Levin pulled 4:34 ahead of the field.
The clock says 1:03 faster, but the races themselves got 3:31 slower 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.
Every race
4 races · 4 events
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Johannesburg30 May 2026Doubles Open · Women1:39:23 PB436/1061Beat 59%
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Johannesburg29 Nov 2025Doubles Open · Mixed1:09:50 PB30/594Beat 95%
↑ 133 days after Cape Town 2025, with Simon Levin 4:34 better than the field Why ↓Close ↑
The race was 3:31 slower for everyone and the clock still says 1:03 faster: 4:34 gained on the field.
The fieldCompare these two →3:31 slower This pair1:03 faster -
Cape Town19 Jul 2025Doubles Open · Mixed1:10:5368/547Beat 88%
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Johannesburg I1 Mar 2025Individual Open · Women1:27:31 PB44/382Beat 89%