Race Time Predictor
How fast will you run VDA 163K?
VDA 163K race stats pre-loaded (163 km, 10,000 m D+). Enter a known race result to get an elevation-adjusted finish time estimate.
163km10,000m D+Winner: ~21h32Cutoff: 48h
Full Val d'Aran by UTMB - VDA 163K course data: aid stations, cutoffs, course profile
- ✓Your race (done)
- 2About you
- 3Your finish
1Your race
- The course
163 km, but it costs 313 km-effort. The 10,000 m of descent is where legs go.
2How should we estimate you?
Start with
Pick whichever you have. After your first estimate we ask for the other - two inputs give a firmer read.
Same as gain. Edit if different.
Hours, or h:mm
- TrailMath
Got a UTMB index? Hand it over, it's the straightest read I get. No index? A long, hilly past race works too.
3 · Your predicted finish
263 km-effort (ITRA, gain only)313 km-effort
Add a past race or your index to get a finish time.
VDA 163K finish times by UTMB Index
Predicted finish on the VDA 163K course (163.0 km, 10,000 m D+) for each UTMB Index, with the margin to the 48h00 cutoff.
| UTMB Index | Predicted finish | Average pace | Margin to cutoff |
|---|---|---|---|
| 850 | 21h16 | 7:50 /km12:36 /mi | +26h44 |
| 800 | 23h14 | 8:33 /km13:46 /mi | +24h46 |
| 750 | 25h24 | 9:21 /km15:03 /mi | +22h36 |
| 700competitive | 27h46 | 10:13 /km16:27 /mi | +20h14 |
| 650 | 30h21 | 11:10 /km17:59 /mi | +17h39 |
| 600 | 33h11 | 12:13 /km19:39 /mi | +14h49 |
| 550 | 36h16 | 13:21 /km21:29 /mi | +11h44 |
| 500mid-pack | 39h39 | 14:36 /km23:29 /mi | +8h21 |
| 450 | 43h20 | 15:57 /km25:40 /mi | +4h40 |
| 400back of the pack | 47h22 | 17:26 /km28:04 /mi | +0h38 |
| 350 | 51h47 | 19:04 /km30:41 /mi | 3h47 past the cutoff |
| 300 | 56h36 | 20:50 /km33:32 /mi | 8h36 past the cutoff |
The 48h00 cutoff sits at about Index 393. The typical winning time, 21h32, sits at about Index 843. At the 2026 edition, the median of the 358 finishers took 39h32, about Index 502. A model estimate, not an official ITRA or UTMB figure.
From a result you already have
What the predictor gives on VDA 163K for a few common reference results.
| Road marathon | 3h00 → 34h54 | 3h30 → 40h43 | 4h00 → 46h32 | 4h30 → 52h21 |
|---|---|---|---|---|
| 50 km trail, 2,000 m D+ | 5h30 → 29h14 | 6h30 → 34h34 | 7h30 → 39h52 | 8h30 → 45h09 |
Road marathons use the tool's rougher power-law fallback.
To prepare each checkpoint, use the VDA 163K aid station planner.
VDA 163K course in numbers
- Climbing per kmClimbing per mile
- 61 m324 ft
- ITRA km-effort
- 263 (100M)
- Highest point
- 2,520 m8,268 ft
- Biggest climb
- +1,520 m over 11.0 km at 12.6% (up to Mines de Liat)+4,987 ft over 6.8 mi at 12.6% (up to Mines de Liat)
- Steepest climb
- +1,107 m over 5.9 km at 18.8% (through Santet Escunhau)+3,632 ft over 3.7 mi at 18.8% (through Santet Escunhau)
- Longest descent
- -1,190 m over 14.2 km at 7.2% (through Mont-Romies)-3,904 ft over 8.8 mi at 7.2% (through Mont-Romies)
- Track climbing above 3%
- 39%
- Winning time / cutoff
- 21h32 / 48h00 (2.2x the winner's time)
Section-by-section climbs, descents and grades are on the VDA 163K course page.
Predict your VDA 163K finish time from a reference race result, adjusted for the course's 163 km and roughly 10,000 m of elevation gain. The overall cutoff is 48h.
About Val d'Aran by UTMB - VDA 163K
Val d'Aran by UTMB - VDA 163K covers 163 km with around 10,000 m of elevation gain, starting in Vielha, Spain. The overall cutoff is 48 hours.
Crew access is allowed at Bossòst (49.17 km), Salardú (113.58 km) and Arties (148.81 km). Drop bags are available at Bossòst and Salardú.
Checkpoint data approximate - verify against the current official race guide at valdaran.utmb.world before your race.
How the prediction works
Your result becomes a UTMB Index, mapped onto VDA 163K by the calibrated model behind the ITRA / UTMB Index Estimator. Full methodology.
Build a training plan targeted at your VDA 163K goal time
TrailMath uses these models to build periodized plans adjusted to your goals and terrain.
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