GBR Sian Koster
3 HYROX races over 1 season, all in a team with 1 partner. Best Doubles Women time: 1:17:09 at Glasgow 2025.
Doubles Women: finish time, race by race
Oldest to newest; a line going down means getting fasterEach dot is one Doubles Women race. Not enough complete, clean Doubles Women races yet to measure the change. Team times are shared with a partner, so they move with who you race with.
3 results
| Race | Division | Time | Place | Runs | Stations | Roxzone | Report | |
|---|---|---|---|---|---|---|---|---|
| London 2025 3 May 2025team: Sian Koster, Charlotte Dolanwhole field → | Doubles Women · team U29 | 1:19:12 | 374th of 1,118133rd of 361 aged U29 | 45:29 | 27:54 | 5:54 | View results | See splits Hide splitsSkiErg4:24fastest 22%Sled push1:42fastest 32%Sled pull3:38fastest 34%Burpee broad jump4:12fastest 48%Row5:04fastest 48%Farmers carry1:39fastest 24%Sandbag lunges3:25fastest 34%Wall balls3:50fastest 20%Runs (8 km)45:29fastest 34%Roxzone5:54fastest 49%Run 14:55fastest 13%Run 25:14fastest 36%Run 35:21fastest 32%Run 45:23fastest 33%Run 55:38fastest 43%Run 65:27fastest 34%Run 75:51faster than 48%Run 87:44fastest 46%Full report for this race → |
| Glasgow 2025 12 Mar 2025team: Charlotte Dolan, Sian Kosterwhole field → | Doubles Women · team U29 | 1:17:09 | 338th of 1,847149th of 688 aged U29 | 46:22 | 25:49 | 5:02 | View results | See splits Hide splitsSkiErg4:23fastest 16%Sled push1:26fastest 7%Sled pull3:05fastest 9%Burpee broad jump3:29fastest 21%Row4:49fastest 17%Farmers carry1:36fastest 19%Sandbag lunges3:12fastest 24%Wall balls3:49fastest 15%Runs (8 km)46:22fastest 25%Roxzone5:02fastest 30%Run 14:09fastest 19%Run 25:48fastest 22%Run 35:59fastest 22%Run 46:15fastest 30%Run 56:15fastest 26%Run 66:21fastest 33%Run 76:29fastest 36%Run 85:09fastest 40%Full report for this race → |
| London 2024 29 Nov 2024team: Charlotte Dolan, Sian Kosterwhole field → | Doubles Women · team U29 | 1:22:36 | 732nd of 1,668276th of 553 aged U29 | 46:38 | 27:41 | 8:22 | View results | See splits Hide splitsSkiErg4:37fastest 46%Sled push1:33fastest 7%Sled pull3:38fastest 20%Burpee broad jump3:49fastest 34%Row5:00fastest 38%Farmers carry1:47faster than 49%Sandbag lunges3:12fastest 30%Wall balls4:05fastest 33%Runs (8 km)46:38faster than 47%Roxzone8:22faster than 45%Run 16:39fastest 30%Run 25:12fastest 47%Run 35:27faster than 49%Run 45:45faster than 38%Run 55:37faster than 49%Run 65:44faster than 43%Run 75:46faster than 41%Run 86:34faster than 32%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 Sian has done each station
| Part | Best | Race | Typical |
|---|---|---|---|
| SkiErg | 4:23 | Glasgow 2025 · best of 3 | 4:48 |
| Sled push | 1:26 | Glasgow 2025 · best of 3 | 1:51 |
| Sled pull | 3:05 | Glasgow 2025 · best of 3 | 4:12 |
| Burpee broad jump | 3:29 | Glasgow 2025 · best of 3 | 4:17 |
| Row | 4:49 | Glasgow 2025 · best of 3 | 5:12 |
| Farmers carry | 1:36 | Glasgow 2025 · best of 3 | 1:52 |
| Sandbag lunges | 3:12 | Glasgow 2025 · best of 3 | 3:47 |
| Wall balls | 3:49 | Glasgow 2025 · best of 3 | 4:22 |
| Runs (8 km) | 45:29 | London 2025 · best of 3 | 49:12 |
| Roxzone | 5:02 | Glasgow 2025 · best of 3 | 7:49 |
How to read
Each station's best across Sian's Doubles Women races, from different races, against the typical Doubles Women split. Venues differ (sled carpets, run laps, where the mats sit), so a best can owe something to the venue.
1 team partner
- Charlotte Dolan3 races
From the team results above. A name opens the search: a partner can have more than one page.
Glasgow 2025, against 1,847 Doubles Women
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 Women finisher at this race. Orange, right: slower, and by how much.
The race as one bar: Sian against the typical Doubles Women 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 1:17:09.
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.
