Progress against the field
Between Cape Town 2025 and Johannesburg 2025, Mariska Nortje pulled 15:02 ahead of the field.
The clock says 9:49 faster, but the races themselves got 5:13 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
3 races · 3 events
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Johannesburg29 Nov 2025Individual Open · Women1:23:37 PB22/550Beat 96%
↑ 133 days after Cape Town 2025 15:02 better than the field Why ↓Close ↑
9:49 faster on the clock in a race that was 5:13 slower for everyone: 15:02 better than the field.
The fieldCompare these two →5:13 slower This athlete9:49 faster -
Cape Town19 Jul 2025Individual Open · Women1:33:26150/431Beat 65%
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Johannesburg I1 Mar 2025Doubles Open · Mixed1:37:05 PB239/372Beat 36%