Joost vs Stef
NED · Open Men · 1 result Joost Siebeling
NED · Open Men · 7 results Stef Koopman
Station radar · best race with a field of 30 or more
Joost: Utrecht 2025, Open Men · Stef: Mechelen 2026, Open Men
This chart shows where Joost and Stef sat in the field on each part of the race: the edge is faster than everyone, the centre is the slowest.Joost: strongest on Carry (faster than 89% of the field), weakest on Runs (faster than 39%).Stef: strongest on Pull (faster than 90% of the field), weakest on Row (faster than 33%).
See the numbers
| Part | Joost: faster than | Stef: faster than |
|---|---|---|
| Ski | 76% | 75% |
| Push | 55% | 33% |
| Pull | 56% | 90% |
| BBJ | 55% | 68% |
| Row | 82% | 33% |
| Carry | 89% | 55% |
| Lunges | 41% | 66% |
| Wall balls | 76% | 78% |
| Roxzone | 74% | 56% |
| Runs | 39% | 47% |
Each athlete against their own field at their own best race (division, gender, that venue). Further out is faster.
Part by part
| Part | Joost | Stef |
|---|---|---|
| SkiErg | 76% | 75% |
| Sled push | 55% | 33% |
| Sled pull | 56% | 90% |
| Burpee broad jump | 55% | 68% |
| Row | 82% | 33% |
| Farmers carry | 89% | 55% |
| Sandbag lunges | 41% | 66% |
| Wall balls | 76% | 78% |
| Roxzone (moving) | 74% | 56% |
| Runs (8 km) | 39% | 47% |
The share of their own field each athlete beat on that segment, at the race named on the left. Higher is better; green marks the better of the two. A dash means no split was published.
Those races as one bar each
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.Joost · Utrecht 2025 · Open Men: 45:50 running, 35:55 at the stations and 4:48 in the roxzone; the longest station was the wall balls (5:52).Below, Stef · Mechelen 2026 · Open Men: 38:51 running, 32:21 at the stations and 7:33 in the roxzone; the longest station was the wall balls (5:29).
See the numbers
| Part | Joost · Utrecht 2025 · Open Men | Stef · Mechelen 2026 · Open Men |
|---|---|---|
| Run 1 | 5:20 | 3:45 |
| SkiErg | 4:18 | 4:17 |
| Run 2 | 5:35 | 4:57 |
| Sled push | 3:34 | 2:55 |
| Run 3 | 5:39 | 4:54 |
| Sled pull | 4:54 | 3:24 |
| Run 4 | 5:38 | 5:03 |
| Burpee broad jump | 5:32 | 4:50 |
| Run 5 | 5:50 | 5:04 |
| Row | 4:32 | 4:55 |
| Run 6 | 5:40 | 4:59 |
| Farmers carry | 1:46 | 2:01 |
| Run 7 | 5:43 | 4:52 |
| Sandbag lunges | 5:27 | 4:30 |
| Run 8 | 6:26 | 5:17 |
| Wall balls | 5:52 | 5:29 |
| Roxzone | 4:48 | 7:33 |
| Finish | 1:26:27 | 1:18:37 |
Head to head: 1 race they both ran
| Race | Joost | Stef | Gap |
|---|---|---|---|
| Utrecht 2025 Open Men · 28 Nov 2025 | 1:26:27 | 1:26:23 | 0:04 · Stef faster |
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