Athlete · Open Men · 45-49 · HKG HKG

Kai Sun Fung

www.roxtimes.com/athletes/kai-sun-fung-e5df3463

4 HYROX races over 2 seasons: 1 solo, 3 in a team with 3 partners.

Open Men time1:39:38Beijing Mar 2026
Open Men place674thof 1,267 · Beijing Mar 2026
Latest race1:22:55Beijing Sep 2026 · Doubles Men with 王德志Kai's best Doubles Men time so far
Strongest part of the raceRoxzonefaster than 77% of Open Men at Beijing Mar 2026
Personal bests

One best per race type

solo, doubles and relay times are different races, so each has its own best

Doubles Men: finish time, race by race

Oldest to newest; a line going down means getting faster
1:24:001:28:001:32:001:36:001:40:00 best 1:22:55 best 1:22:55 · Beijing

This line shows the finish time of Kai Sun Fung at each race, oldest on the left; lower is faster.The best was 1:22:55 at Beijing (Sep 2026); Kai Sun Fung was 17:11 faster at the latest race than at the first.

See the numbers
Race Date Division Finish
Beijing Aug 2025 Doubles Men 1:40:06
Shanghai Nov 2025 Doubles Men 1:34:29
Beijing Sep 2026 Doubles Men 1:22:55

Each dot is one Doubles Men race; click one for that race's report. Not enough complete, clean Doubles Men races yet to measure the change. Team times are shared with a partner, so they move with who you race with.

Every race

4 results at 4 races

Tap a result for its full report
Doubles Men, team 40-44, with 王德志 1:22:55 407th of 815; 39th of 105 aged 40-44 43:02 31:47 8:09 Runs 43:02 · Stations 31:47 · Roxzone 8:09

407th of 815 Doubles Men (faster than 50%).

Kai Sun Fung at HYROX Beijing Sep 2026, Doubles Men: every split in race order, the typical split of Doubles Men at this race, and the share of the 815 Doubles Men finishers here who were slower on that part.
Part Time Typical here vs 815 Doubles Men here
Run 1: 4:59 4:45 faster than 40%
SkiErg: 4:10 4:09 faster than 49%
Run 2: 4:48 5:07 faster than 65%
Sled push: 2:16 2:20 faster than 55%
Run 3: 5:25 5:32 faster than 54%
Sled pull: 3:42 3:45 faster than 52%
Run 4: 5:24 5:29 faster than 53%
Burpee broad jump: 4:52 3:17 faster than 7%
Run 5: 5:33 5:48 faster than 58%
Row: 4:45 4:43 faster than 48%
Run 6: 5:16 5:35 faster than 60%
Farmers carry: 2:09 1:53 faster than 16%
Run 7: 5:24 5:41 faster than 60%
Sandbag lunges: 4:12 3:43 faster than 31%
Run 8: 6:18 6:36 faster than 57%
Wall balls: 5:41 4:36 faster than 22%
Roxzone: 8:09 8:19 faster than 52%
Runs (8 km) 43:02 44:59 faster than 58%
Stations (8) 31:47
Finish 1:22:55 1:22:59 407th of 815 · faster than 50%

Full report for this race →This result as data (JSON)

Open Men, 45-49 1:39:38 674th of 1,267; 34th of 62 aged 45-49 42:03 48:27 9:13 Runs 42:03 · Stations 48:27 · Roxzone 9:13

674th of 1,267 Open Men (faster than 46%). Against the 39 who finished around 1:40:33: most time gained on the roxzone (2:27), most lost on sled push (1:45). Runs 5 to 8 took 2:03 more than runs 1 to 4 (them: 2:14 more).

Kai Sun Fung at HYROX Beijing Mar 2026, Open Men: every split in race order, the typical split of Open Men at this race, and the share of the 1,267 Open Men finishers here who were slower on that part.
Part Time Typical here vs 1,267 Open Men here
Run 1: 5:17 5:13 faster than 47%
SkiErg: 5:22 4:51 faster than 16%
Run 2: 4:45 4:48 faster than 53%
Sled push: 5:12 3:21 faster than 6%
Run 3: 4:55 5:12 faster than 61%
Sled pull: 5:59 5:33 faster than 37%
Run 4: 5:05 5:11 faster than 54%
Burpee broad jump: 6:28 5:52 faster than 38%
Run 5: 5:21 5:29 faster than 55%
Row: 5:08 5:08 faster than 50%
Run 6: 5:20 5:17 faster than 47%
Farmers carry: 3:35 2:35 faster than 11%
Run 7: 5:18 5:19 faster than 50%
Sandbag lunges: 7:02 6:03 faster than 31%
Run 8: 6:06 6:25 faster than 58%
Wall balls: 9:41 7:51 faster than 30%
Roxzone: 9:13 11:30 faster than 76%
Runs (8 km) 42:03 43:48 faster than 56%
Stations (8) 48:27
Finish 1:39:38 1:37:56 674th of 1,267 · faster than 46%

Full report for this race →This result as data (JSON)

Doubles Men, team 40-44, with 健骅 李 1:34:29 334th of 388; 46th of 49 aged 40-44 43:18 42:21 8:55 Runs 43:18 · Stations 42:21 · Roxzone 8:55

334th of 388 Doubles Men (faster than 13%).

Kai Sun Fung at HYROX Shanghai 2025, Doubles Men: every split in race order, the typical split of Doubles Men at this race, and the share of the 388 Doubles Men finishers here who were slower on that part.
Part Time Typical here vs 388 Doubles Men here
Run 1: 6:00 5:37 faster than 29%
SkiErg: 4:37 4:18 faster than 17%
Run 2: 5:05 4:45 faster than 28%
Sled push: 7:46 2:04 faster than 0%
Run 3: 5:05 5:03 faster than 46%
Sled pull: 8:22 3:53 faster than 1%
Run 4: 5:05 5:03 faster than 48%
Burpee broad jump: 3:08 3:13 faster than 53%
Run 5: 5:37 5:11 faster than 31%
Row: 5:05 4:50 faster than 29%
Run 6: 5:10 5:02 faster than 41%
Farmers carry: 2:05 1:41 faster than 9%
Run 7: 5:10 5:03 faster than 45%
Sandbag lunges: 5:41 3:48 faster than 3%
Run 8: 6:10 5:39 faster than 33%
Wall balls: 5:37 4:17 faster than 11%
Roxzone: 8:55 9:33 faster than 64%
Runs (8 km) 43:18 41:27 faster than 38%
Stations (8) 42:21
Finish 1:34:29 1:19:44 334th of 388 · faster than 13%

Full report for this race →This result as data (JSON)

Doubles Men, team 40-44, with Jonathan Li 1:40:06 212th of 244; 23rd of 31 aged 40-44 51:53 38:14 10:02 Runs 51:53 · Stations 38:14 · Roxzone 10:02

212th of 244 Doubles Men (faster than 13%).

Kai Sun Fung at HYROX Beijing 2025, Doubles Men: every split in race order, the typical split of Doubles Men at this race, and the share of the 244 Doubles Men finishers here who were slower on that part.
Part Time Typical here vs 244 Doubles Men here
Run 1: 5:35 4:57 faster than 20%
SkiErg: 4:58 4:13 faster than 3%
Run 2: 5:46 5:05 faster than 19%
Sled push: 3:30 2:07 faster than 2%
Run 3: 5:59 5:29 faster than 26%
Sled pull: 5:45 3:55 faster than 5%
Run 4: 6:46 5:26 faster than 13%
Burpee broad jump: 4:11 3:13 faster than 14%
Run 5: 7:09 5:29 faster than 11%
Row: 4:58 4:37 faster than 19%
Run 6: 7:01 5:29 faster than 12%
Farmers carry: 2:00 1:47 faster than 24%
Run 7: 6:04 5:24 faster than 25%
Sandbag lunges: 6:07 4:02 faster than 5%
Run 8: 7:38 6:09 faster than 19%
Wall balls: 6:45 4:32 faster than 9%
Roxzone: 10:02 7:56 faster than 22%
Runs (8 km) 51:53 43:44 faster than 19%
Stations (8) 38:14
Finish 1:40:06 1:21:03 212th of 244 · faster than 13%

Full report for this race →This result as data (JSON)

How to read

Place is the position among timed finishers in the same race, division and gender; a doubles place is the team's. Runs is the organiser's official run total (it can differ from the eight laps added up by a few seconds), stations the eight stations added up, and roxzone the time moving between them. The age group is the one entered for that race; for a team it is the team’s age group.

Raced with

3 team partners

From the team results above. A name opens the search: a partner can have more than one page.

Station profile · best Open Men race

Beijing Mar 2026, against 1,267 Open Men

Full race report →

Shape of the race

50% top SkiPushPullBBJRowCarryLungesWall ballsRoxzoneRuns
Kaiedge = faster than everyone, centre = slowest

This chart shows where Kai sat in the field on each part of the race: the edge is faster than everyone, the centre is the slowest.Strongest on Roxzone (faster than 77% of the field), weakest on Push (faster than 6%).

See the numbers
Part Kai: faster than
Ski 16%
Push 6%
Pull 37%
BBJ 39%
Row 51%
Carry 11%
Lunges 32%
Wall balls 30%
Roxzone 77%
Runs 57%

Further out means you beat more of the field on that part. A dent is a weak spot.

How you ranked on each station

SkiErg faster than 16%
Sled push faster than 6%
Sled pull faster than 37%
Burpee broad jump faster than 39%
Row faster than 51%
Farmers carry faster than 11%
Sandbag lunges faster than 32%
Wall balls faster than 30%
Roxzone faster than 77%
Runs (8 km) faster than 57%

How much of the field Kai beat on each part of the race, at this race.Best: Roxzone (faster than 77%); weakest: Sled push (faster than 6%).

Longer is better: the share of the field you beat.

Minutes against the typical finisher

SkiErg 0:31 slower
Sled push 1:51 slower
Sled pull 0:26 slower
Burpee broad jump 0:36 slower
Row level
Farmers carry 1:00 slower
Sandbag lunges 0:59 slower
Wall balls 1:50 slower
Roxzone 2:17 faster
Runs (8 km) 1:45 faster

Kai's time on each part against the typical Open Men finisher at this race.Best: Roxzone (2:17 faster); weakest: Sled push (1:51 slower).

Green, left of centre: faster than the typical Open Men finisher at this race. Orange, right: slower, and by how much.

The race as one bar: Kai against the typical Open Men finisher

Kai1:39:38
5:175:224:455:124:555:595:056:285:215:085:203:355:187:026:069:419:13
Typical Open Men1:35:38
5:134:514:483:215:125:335:115:525:295:085:172:355:196:036:257:5111:30
RunsStationsRoxzone (moving between stations)

This chart draws the race in order, left to right: each 1 km run (blue), each station (yellow) and the roxzone (grey), sized by its time.Kai: 42:07 running, 48:26 at the stations and 9:13 in the roxzone; the longest station was the wall balls (9:41).Below, Typical Open Men: 42:54 running, 41:15 at the stations and 11:30 in the roxzone; the longest station was the wall balls (7:51).

See the numbers
Part Kai Typical Open Men
Run 1 5:17 5:13
SkiErg 5:22 4:51
Run 2 4:45 4:48
Sled push 5:12 3:21
Run 3 4:55 5:12
Sled pull 5:59 5:33
Run 4 5:05 5:11
Burpee broad jump 6:28 5:52
Run 5 5:21 5:29
Row 5:08 5:08
Run 6 5:20 5:17
Farmers carry 3:35 2:35
Run 7 5:18 5:19
Sandbag lunges 7:02 6:03
Run 8 6:06 6:25
Wall balls 9:41 7:51
Roxzone 9:13 11:30
Finish 1:39:38 1:37:56

The race in order, left to right. A wider block than the one below is slower than typical.

Sled push cost 1:51 against the typical Open Men finisher at Beijing Mar 2026. The sled push guide shows whether that is strength or pacing, and the workouts that fix it.

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The RoxHype app

Fix sled push. Then beat 1:39:38.

The RoxHype app is your training plan to race day: built from your splits, your kit and your race date, and adjusted every week.

  • A week-by-week plan that counts down to your race
  • Extra work on your slowest stations
  • Adjusts every week to what you actually did

Free to download. Used by more than 40,000 HYROX athletes.

RoxHype app home: days to your HYROX, your expected finish range and this week's sessions RoxHype workout player guiding a sled push, with the next exercise lined up
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