Progress against the field
From Johannesburg I 2025 to Johannesburg 2025, the field gained 2:56 on Nniny Tlhone.
Over the same races everyone got 1:06 quicker, so 1:50 slower 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.
Every race
3 races · 3 events
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Johannesburg29 Nov 2025Individual Open · Women1:56:30275/550Beat 50%
↑ 133 days after Cape Town 2025 3:54 worse than the field Why ↓Close ↑
3:54 behind the field: 9:07 slower on the clock, against 5:13 slower for everyone.
The fieldCompare these two →5:13 slower This athlete9:07 slower -
Cape Town19 Jul 2025Individual Open · Women1:47:23 PB259/431Beat 40%
↑ 140 days after Johannesburg I 2025 0:58 better than the field Why ↓Close ↑
0:58 better than the field: 7:17 faster on the clock, against 6:19 faster for everyone.
The fieldCompare these two →6:19 faster This athlete7:17 faster -
Johannesburg I1 Mar 2025Individual Open · Women1:54:40218/382Beat 43%