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Athlete Japan

Kazunori Masumaru

Kazunori Masumaru has raced HYROX twice in 2026, both in the men's Doubles Open. 1:13:56 at Chiba 2026 is the fastest of 2, 113th of 468 men's teams and ahead of 76% of the field. With Hirofumi Maeyama both times, that is 4:35 quicker on the clock than the first of them, at Osaka 2026.

Best finish, by category
Doubles Open · Men
1:13:56
Chiba 2026

Progress against the field

Kazunori Masumaru and Hirofumi Maeyama have dropped 0:34 behind the field from Osaka 2026 to Chiba 2026.

The clock says 4:35 faster, but the races themselves got 5:09 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. Chiba
    6 Aug 2026
    Doubles Open · Men
    1:13:56 PB
    113/468
    Beat 76%
    ↑ 188 days after Osaka 2026, with Hirofumi Maeyama 0:34 worse than the field Faster on the clock, behind the field Why ↓

    4:35 faster on the clock, yet the race was 5:09 faster for everyone, so 0:34 was lost on the field.

    Compare these two →
  2. Osaka
    30 Jan 2026
    Doubles Open · Men
    1:18:31
    265/748
    Beat 65%

Personal bests, by station

4:06
Chiba 2026
1:29
Osaka 2026
3:29
Osaka 2026
1:40
Osaka 2026
4:30
Chiba 2026
1:29
Osaka 2026
3:15
Osaka 2026
4:17
Osaka 2026

Station by station, race by race

Doubles Open · Men Faster is lower
1000m SkiErg
4:07 4:06
50m Sled Push
1:49 1:29
50m Sled Pull
3:45 3:29
80m Burpee Broad Jump
2:33 1:40
1000m Row
4:34 4:30
200m Farmers Carry
1:37 1:29
100m Sandbag Lunges
3:21 3:15
Wall Balls
4:30 4:17