NED Jacob Koornstra
2 HYROX races over 1 season, all in a team with 1 partner. Best Doubles Mixed time: 1:09:55 at Utrecht 2025.
Doubles Mixed: finish time, race by race
Oldest to newest; a line going down means getting fasterEach dot is one Doubles Mixed race. Not enough complete, clean Doubles Mixed races yet to measure the change. Team times are shared with a partner, so they move with who you race with.
2 results
| Race | Division | Time | Place | Runs | Stations | Roxzone | Report | |
|---|---|---|---|---|---|---|---|---|
| Auckland 2026 29 Jan 2026team: Jacob Koornstra, Femke Schootstrawhole field → | Doubles Mixed · team 25-29 | 1:12:00 | 125th of 1,12731st of 226 aged 25-29 | 39:59 | 27:56 | 4:10 | View results | See splits Hide splitsSkiErg3:57fastest 23%Sled push2:22fastest 47%Sled pull3:27fastest 23%Burpee broad jump2:54fastest 14%Row4:49fastest 40%Farmers carry1:49faster than 41%Sandbag lunges3:30fastest 20%Wall balls5:08faster than 27%Runs (8 km)39:59fastest 10%Roxzone4:10fastest 8%Run 14:51fastest 9%Run 24:24fastest 8%Run 34:42fastest 7%Run 44:52fastest 10%Run 55:03fastest 10%Run 65:14fastest 15%Run 75:14fastest 14%Run 85:43fastest 13%Full report for this race → |
| Utrecht 2025 28 Nov 2025team: Jacob Koornstra, Femke Schootstrawhole field → | Doubles Mixed · team 25-29 | 1:09:55 | 85th of 1,08329th of 298 aged 25-29 | 40:11 | 25:28 | 4:20 | View results | See splits Hide splitsSkiErg3:59fastest 11%Sled push2:06fastest 14%Sled pull3:11fastest 15%Burpee broad jump2:46fastest 8%Row4:26fastest 16%Farmers carry1:47fastest 30%Sandbag lunges3:20fastest 21%Wall balls3:53fastest 9%Runs (8 km)40:11fastest 10%Roxzone4:20fastest 13%Run 14:11fastest 3%Run 25:11fastest 19%Run 35:12fastest 11%Run 45:11fastest 10%Run 55:27fastest 14%Run 65:23fastest 14%Run 75:33fastest 20%Run 84:06fastest 12%Full report for this race → |
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. How the numbers are made.
The fastest Jacob has done each station
| Part | Best | Race | Typical |
|---|---|---|---|
| SkiErg | 3:57 | Auckland 2026 · best of 2 | 4:20 |
| Sled push | 2:06 | Utrecht 2025 · best of 2 | 2:11 |
| Sled pull | 3:11 | Utrecht 2025 · best of 2 | 3:59 |
| Burpee broad jump | 2:46 | Utrecht 2025 · best of 2 | 3:35 |
| Row | 4:26 | Utrecht 2025 · best of 2 | 4:47 |
| Farmers carry | 1:47 | Utrecht 2025 · best of 2 | 1:50 |
| Sandbag lunges | 3:20 | Utrecht 2025 · best of 2 | 4:03 |
| Wall balls | 3:53 | Utrecht 2025 · best of 2 | 4:34 |
| Runs (8 km) | 39:59 | Auckland 2026 · best of 2 | 45:36 |
| Roxzone | 4:10 | Auckland 2026 · best of 2 | 7:11 |
How to read
Each station's best across Jacob's Doubles Mixed races, from different races, against the typical Doubles Mixed split. Venues differ (sled carpets, run laps, where the mats sit), so a best can owe something to the venue.
1 team partner
- Femke Schootstra2 races
From the team results above. A name opens the search: a partner can have more than one page.
Utrecht 2025, against 1,083 Doubles Mixed
Shape of the race
Further out means you beat more of the field on that part. A dent is a weak spot.
How you ranked on each station
Longer is better: the share of the field you beat.
Minutes against the typical finisher
Green, left of centre: faster than the typical Doubles Mixed finisher at this race. Orange, right: slower, and by how much.
The race as one bar: Jacob against the typical Doubles Mixed finisher
The race in order, left to right. A wider block than the one below is slower than typical.
Training for the next one? Let's beat 1:09:55.
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.
