Sierre-Zinal Finish Time Predictor
Sierre-Zinal race stats pre-loaded (31 km, 2,200 m D+). Enter a known race result to get an elevation-adjusted finish time estimate.
Full Sierre-Zinal course data: aid stations, cutoffs, course profile
1. Your race
2. How should we estimate you?
3. Your predicted finish
53.0 km-effort (ITRA, gain only)58.5 km-effort
Add a past race or your index to get a finish time.
Sierre-Zinal finish times by UTMB Index
Predicted finish on the Sierre-Zinal course (31.0 km, 2,200 m D+) for each UTMB Index, with the margin to the 7h00 cutoff.
| UTMB Index | Predicted finish | Average pace | Margin to cutoff |
|---|---|---|---|
| 850 | 3h03 | 5:53 /km | +3h57 |
| 800 | 3h20 | 6:26 /km | +3h40 |
| 750 | 3h38 | 7:02 /km | +3h22 |
| 700competitive | 3h59 | 7:42 /km | +3h01 |
| 650 | 4h21 | 8:25 /km | +2h39 |
| 600 | 4h45 | 9:12 /km | +2h15 |
| 550 | 5h12 | 10:03 /km | +1h48 |
| 500mid-pack | 5h41 | 10:59 /km | +1h19 |
| 450 | 6h12 | 12:00 /km | +0h48 |
| 400back of the pack | 6h47 | 13:08 /km | +0h13 |
| 350 | 7h25 | 14:21 /km | 0h25 past the cutoff |
| 300 | 8h06 | 15:41 /km | 1h06 past the cutoff |
The 7h00 cutoff sits at about Index 382. The typical winning time, 2h26, sits at about Index 974. At the 2026 edition, the median of the 1,637 finishers took 4h22, about Index 647. A model estimate, not an official ITRA or UTMB figure.
From a result you already have
What the predictor gives on Sierre-Zinal for a few common reference results.
| Road marathon | 3h00 → 4h29 | 3h30 → 5h13 | 4h00 → 5h58 | 4h30 → 6h43 |
|---|---|---|---|---|
| 50 km trail, 2,000 m D+ | 5h30 → 4h11 | 6h30 → 4h57 | 7h30 → 5h42 | 8h30 → 6h28 |
Road marathons use the tool's rougher power-law fallback.
For arrival times at each checkpoint, use the Sierre-Zinal aid station planner.
Sierre-Zinal course in numbers
- Climbing per km
- 71 m
- ITRA km-effort
- 53 (50K)
- Highest point
- 2,416 m
- Biggest climb
- +1,501 m over 10.8 km at 13.8% (from Start - Sierre)
- Longest descent
- -777 m over 9.0 km at 8.3% (down to Zinal (Finish))
- Track climbing above 3%
- 47%
- Winning time / cutoff
- 2h26 / 7h00 (2.9x the winner's time)
Section-by-section climbs, descents and grades are on the Sierre-Zinal course page.
Predict your Sierre-Zinal finish time from a reference race result, adjusted for the course's 31 km and roughly 2,200 m of elevation gain. The overall cutoff is 7h.
About Sierre-Zinal
Sierre-Zinal covers 31 km with around 2,200 m of elevation gain, starting in Sierre, Switzerland. The overall cutoff is 7 hours.
Crew access is allowed at Chandolin (11.82 km) and Tignousa (15.5 km).
Checkpoint data approximate - verify against the current official race guide at sierre-zinal.com before your race.
How the prediction works
Your result becomes a UTMB Index, mapped onto Sierre-Zinal by the calibrated model behind the ITRA / UTMB Index Estimator. Full methodology.
Build a training plan targeted at your Sierre-Zinal goal time
TrailMath uses these models to build periodized plans adjusted to your goals and terrain.
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