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Athlete Netherlands

Merel Karlijn Muller

In 2026, Merel Karlijn Muller has raced HYROX twice, both in the mixed Doubles Open. 1:49:37 at Heerenveen 2026 is the fastest of 2, 775th of 808 mixed teams. On the clock, that is 5:02 faster than the first of them, at Rotterdam 2026, both times with Robin Hartog.

Best finish, by category
Doubles Open · Mixed
1:49:37
Heerenveen 2026

Progress against the field

From Rotterdam 2026 to Heerenveen 2026, Merel Karlijn Muller and Robin Hartog got 2:50 faster than the field.

The clock says 5:02 faster, but the races themselves got 2:12 quicker for everyone.

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

2 races · 2 events

  1. Heerenveen
    14 May 2026
    Doubles Open · Mixed
    1:49:37 PB
    775/808
    Beat 4%
    ↑ 29 days after Rotterdam 2026, with Robin Hartog 2:50 better than the field Why ↓

    2:50 better than the field: 5:02 faster on the clock, against 2:12 faster for everyone.

    Compare these two →
  2. Rotterdam
    15 Apr 2026
    Doubles Open · Mixed
    1:54:39
    1019/1047
    Beat 3%

Personal bests, by station

5:09
Heerenveen 2026
3:09
Heerenveen 2026
6:12
Heerenveen 2026
6:56
Rotterdam 2026
5:27
Heerenveen 2026
2:37
Heerenveen 2026
7:16
Heerenveen 2026
8:24
Heerenveen 2026

Station by station, race by race

Doubles Open · Mixed Faster is lower
1000m SkiErg
5:30 5:09
50m Sled Push
3:12 3:09
50m Sled Pull
6:20 6:12
80m Burpee Broad Jump
7:21 6:56
1000m Row
5:46 5:27
200m Farmers Carry
2:48 2:37
100m Sandbag Lunges
7:58 7:16
Wall Balls
9:03 8:24