Race Time Predictor
How fast will you run TDL 75K?
TDL 75K race stats pre-loaded (75 km, 5,100 m D+). Enter a known race result to get an elevation-adjusted finish time estimate.
75km5,100m D+Winner: ~8h29Cutoff: 20h
Full Val d'Aran by UTMB - TDL 75K course data: aid stations, cutoffs, course profile
- ✓Your race (done)
- 2About you
- 3Your finish
1Your race
- The course
75 km, but it costs 150 km-effort. The 5,100 m of climbing sets the pace.
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
126 km-effort (ITRA, gain only)150 km-effort
Add a past race or your index to get a finish time.
TDL 75K finish times by UTMB Index
Predicted finish on the TDL 75K course (75.0 km, 5,100 m D+) for each UTMB Index, with the margin to the 20h00 cutoff.
| UTMB Index | Predicted finish | Average pace | Margin to cutoff |
|---|---|---|---|
| 850 | 8h45 | 7:00 /km11:15 /mi | +11h15 |
| 800 | 9h33 | 7:39 /km12:18 /mi | +10h27 |
| 750 | 10h27 | 8:21 /km13:27 /mi | +9h33 |
| 700competitive | 11h25 | 9:08 /km14:42 /mi | +8h35 |
| 650 | 12h29 | 9:59 /km16:04 /mi | +7h31 |
| 600 | 13h39 | 10:55 /km17:34 /mi | +6h21 |
| 550 | 14h55 | 11:56 /km19:12 /mi | +5h05 |
| 500mid-pack | 16h18 | 13:03 /km20:59 /mi | +3h42 |
| 450 | 17h49 | 14:15 /km22:57 /mi | +2h11 |
| 400back of the pack | 19h29 | 15:35 /km25:05 /mi | +0h31 |
| 350 | 21h18 | 17:02 /km27:25 /mi | 1h18 past the cutoff |
| 300 | 23h17 | 18:37 /km29:58 /mi | 3h17 past the cutoff |
The 20h00 cutoff sits at about Index 385. The typical winning time, 8h29, sits at about Index 867. At the 2026 edition, the median of the 610 finishers took 15h07, about Index 542. A model estimate, not an official ITRA or UTMB figure.
From a result you already have
What the predictor gives on TDL 75K for a few common reference results.
| Road marathon | 3h00 → 14h12 | 3h30 → 16h34 | 4h00 → 18h56 | 4h30 → 21h18 |
|---|---|---|---|---|
| 50 km trail, 2,000 m D+ | 5h30 → 12h01 | 6h30 → 14h13 | 7h30 → 16h23 | 8h30 → 18h34 |
Road marathons use the tool's rougher power-law fallback.
To prepare each checkpoint, use the TDL 75K aid station planner.
TDL 75K course in numbers
- Climbing per kmClimbing per mile
- 68 m359 ft
- ITRA km-effort
- 126 (100K)
- Highest point
- 2,455 m8,054 ft
- Biggest climb
- +887 m over 5.0 km at 17.4%+2,910 ft over 3.1 mi at 17.4%
- Steepest climb
- +563 m over 2.2 km at 25.8%+1,847 ft over 1.4 mi at 25.8%
- Longest descent
- -1,361 m over 9.1 km at 14.2% (through Artiga de Lin)-4,465 ft over 5.7 mi at 14.2% (through Artiga de Lin)
- Track climbing above 3%
- 43%
- Winning time / cutoff
- 8h29 / 20h00 (2.4x the winner's time)
Section-by-section climbs, descents and grades are on the TDL 75K course page.
Predict your TDL 75K finish time from a reference race result, adjusted for the course's 75 km and roughly 5,100 m of elevation gain. The overall cutoff is 20h.
About Val d'Aran by UTMB - TDL 75K
Val d'Aran by UTMB - TDL 75K covers 75 km with around 5,100 m of elevation gain, starting in Bossòst, Spain. The overall cutoff is 20 hours.
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 TDL 75K by the calibrated model behind the ITRA / UTMB Index Estimator. Full methodology.
Build a training plan targeted at your TDL 75K goal time
TrailMath uses these models to build periodized plans adjusted to your goals and terrain.
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