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Athlete Japan

Tatsuya Kai

Since 2025, Tatsuya Kai has raced HYROX 5 times at 3 events across 3 categories, the men's Doubles Open most often (3). 1:17:13 at Chiba 2026 is the fastest of 3 in the men's Doubles Open, 163rd of 468 men's teams and ahead of 65% of the field.

Best finish, by category
Doubles Open · Men
1:17:13
Chiba 2026
Doubles Open · Mixed
1:40:08
Chiba 2026

Progress against the field

From Yokohama 2025 to Osaka 2026, Tatsuya Kai and Tatsuyuki Furuta got 3:56 faster than the field.

The clock says 5:26 faster, but the races themselves got 1:30 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

5 races · 3 events

  1. Chiba
    6 Aug 2026
    Doubles Open · Mixed
    1:40:08 PB
    563/761
    Beat 26%
  2. Chiba
    6 Aug 2026
    Doubles Open · Men
    1:17:13 PB
    163/468
    Beat 65%
  3. Osaka
    30 Jan 2026
    Relay · Mixed
    1:27:30
    84/124
    Beat 32%
  4. Osaka
    30 Jan 2026
    Doubles Open · Men
    1:18:16
    257/748
    Beat 66%
    ↑ 174 days after Yokohama 2025, with Tatsuyuki Furuta 3:56 better than the field Why ↓

    3:56 better than the field: 5:26 faster on the clock, against 1:30 faster for everyone.

    Compare these two →
  5. Yokohama
    9 Aug 2025
    Doubles Open · Men
    1:23:42
    149/277
    Beat 46%

Personal bests, by station

4:24
Osaka 2026
1:38
Yokohama 2025
2:17
Yokohama 2025
2:14
Osaka 2026
4:58
Chiba 2026
1:33
Chiba 2026
3:07
Osaka 2026
5:10
Chiba 2026

Station by station, race by race

Doubles Open · Men Faster is lower
1000m SkiErg
4:32 4:24
50m Sled Push
1:44 1:38
50m Sled Pull
3:54 2:17
80m Burpee Broad Jump
2:45 2:14
1000m Row
5:15 4:58
200m Farmers Carry
2:19 1:33
100m Sandbag Lunges
3:26 3:07
Wall Balls
9:22 5:10