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Athlete United Kingdom

Iona Mumby Schwerin

Since 2024, Iona Mumby Schwerin has raced HYROX 3 times, every one in the women's Doubles Open. The fastest of 3 is 1:11:10 at London 2024, a top-10% finish: 96th of 1,150 women's teams. On the clock, that is 1:50 faster than the first of them, at Sports Direct HYROX London 2024, both times with Sally Clapperton.

Best finish, by category
Doubles Open · Women
1:11:10
London 2024

Progress against the field

Iona Mumby Schwerin and Sally Clapperton have dropped 8:51 behind the field from Sports Direct HYROX London 2024 to London Excel 2025.

Over the same races everyone got 5:07 quicker, so 3:44 slower on the clock looks better than it was.

Time ahead of the field Up is better
Sports Direct HYROX London 2024 London Excel 2025

370 days between London 2024 and London Excel 2025 is the longest gap compared here, and the second race was 8:42 behind the field.

Race by race, in the list below ↓
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

  1. London Excel
    4 Dec 2025
    Doubles Open · Women
    1:16:44
    457/1887
    Beat 76%
    ↑ 370 days after London 2024, with Sally Clapperton 8:42 worse than the field Why ↓

    8:42 behind the field: 5:34 slower on the clock, against 3:08 faster for everyone.

    Compare these two →
  2. London
    29 Nov 2024
    Doubles Open · Women
    1:11:10 PB
    96/1150
    Beat 92%
    ↑ 209 days after Sports Direct HYROX London 2024, with Sally Clapperton 0:09 worse than the field Why ↓

    1:50 faster on the clock, and the race was 1:59 faster for everyone. Whatever changed, it changed for all of them.

    Compare these two →
  3. Sports Direct HYROX London
    4 May 2024
    Doubles Open · Women
    1:13:00
    150/1419
    Beat 89%

Personal bests, by station

4:23
London 2024
1:21
Sports Direct HYROX London 2024
3:47
London Excel 2025
3:18
London 2024
4:43
Sports Direct HYROX London 2024
1:31
Sports Direct HYROX London 2024
2:59
Sports Direct HYROX London 2024
3:14
Sports Direct HYROX London 2024

Station by station, race by race

Doubles Open · Women Faster is lower
1000m SkiErg
4:54 4:23
50m Sled Push
1:52 1:21
50m Sled Pull
4:17 3:47
80m Burpee Broad Jump
4:01 3:18
1000m Row
5:22 4:43
200m Farmers Carry
1:46 1:31
100m Sandbag Lunges
4:59 2:59
Wall Balls
3:58 3:14