Progress against the field
Between Birmingham 2025 and Cardiff 2026, Carl Southam and Natalie Southam pulled 7:47 ahead of the field.
The clock says 10:58 faster, but the races themselves got 3:11 quicker for everyone.
The biggest step was Birmingham 2025 → Glasgow 2026: 6:57 on the field in 140 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.
Every race
3 races · 3 events
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Cardiff29 Apr 2026Doubles Open · Mixed1:26:32 PB235/361Beat 35%
↑ 49 days after Glasgow 2026, with Natalie Southam 0:50 better than the field Why ↓Close ↑
2:57 faster on the clock, and the race was 2:07 faster for everyone, so 0:50 of it was this pair.
The fieldCompare these two →2:07 faster This pair2:57 faster -
Glasgow11 Mar 2026Doubles Open · Mixed1:29:29307/460Beat 33%
↑ 140 days after Birmingham 2025, with Natalie Southam 6:57 better than the field Why ↓Close ↑
6:57 better than the field: 8:01 faster on the clock, against 1:04 faster for everyone.
The fieldCompare these two →1:04 faster This pair8:01 faster -
Birmingham22 Oct 2025Doubles Open · Mixed1:37:30281/312Beat 10%