Race Time Predictor
How fast will you run Canyons 100K?
Canyons 100K race stats pre-loaded (100 km, 3,698 m D+). Enter a known race result to get an elevation-adjusted finish time estimate.
100km3,698m D+Winner: ~8h19Cutoff: 20h
Full The Canyons Endurance Runs by UTMB - 100K course data: aid stations, cutoffs, course profile
- ✓Your race (done)
- 2About you
- 3Your finish
1Your race
- The course
100 km, but it costs 161 km-effort. The 4,838 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
137 km-effort (ITRA, gain only)161 km-effort
Add a past race or your index to get a finish time.
Canyons 100K finish times by UTMB Index
Predicted finish on the Canyons 100K course (100.0 km, 3,698 m D+) for each UTMB Index, with the margin to the 20h00 cutoff.
| UTMB Index | Predicted finish | Average pace | Margin to cutoff |
|---|---|---|---|
| 850 | 9h01 | 5:25 /km8:43 /mi | +10h59 |
| 800 | 9h52 | 5:55 /km9:32 /mi | +10h08 |
| 750 | 10h47 | 6:28 /km10:25 /mi | +9h13 |
| 700competitive | 11h47 | 7:04 /km11:23 /mi | +8h13 |
| 650 | 12h53 | 7:44 /km12:26 /mi | +7h07 |
| 600 | 14h05 | 8:27 /km13:36 /mi | +5h55 |
| 550 | 15h24 | 9:14 /km14:52 /mi | +4h36 |
| 500mid-pack | 16h50 | 10:06 /km16:15 /mi | +3h10 |
| 450 | 18h24 | 11:02 /km17:46 /mi | +1h36 |
| 400back of the pack | 20h06 | 12:04 /km19:25 /mi | 0h06 past the cutoff |
| 350 | 21h59 | 13:11 /km21:13 /mi | 1h59 past the cutoff |
| 300 | 24h02 | 14:25 /km23:12 /mi | 4h02 past the cutoff |
The 20h00 cutoff sits at about Index 403. The typical winning time, 8h19, sits at about Index 896. At the 2026 edition, the median of the 538 finishers took 15h56, about Index 531. A model estimate, not an official ITRA or UTMB figure.
From a result you already have
What the predictor gives on Canyons 100K for a few common reference results.
| Road marathon | 3h00 → 15h29 | 3h30 → 18h04 | 4h00 → 20h39 | 4h30 → 23h14 |
|---|---|---|---|---|
| 50 km trail, 2,000 m D+ | 5h30 → 12h25 | 6h30 → 14h40 | 7h30 → 16h55 | 8h30 → 19h10 |
Road marathons use the tool's rougher power-law fallback.
To prepare each checkpoint, use the Canyons 100K aid station planner.
Canyons 100K course in numbers
- Climbing per kmClimbing per mile
- 37 m195 ft
- ITRA km-effort
- 137 (100K)
- Highest point
- 1,529 m5,016 ft
- Biggest climb
- +587 m over 4.6 km at 12.6% (up to Deadwood - 1)+1,926 ft over 2.9 mi at 12.6% (up to Deadwood - 1)
- Steepest climb
- +529 m over 3.5 km at 14.5% (up to Deadwood - 2)+1,736 ft over 2.2 mi at 14.5% (up to Deadwood - 2)
- Longest descent
- -445 m over 8.0 km at 5.0% (from Start - China Wall)-1,460 ft over 5.0 mi at 5.0% (from Start - China Wall)
- Track climbing above 3%
- 32%
- Winning time / cutoff
- 8h19 / 20h00 (2.4x the winner's time)
Section-by-section climbs, descents and grades are on the Canyons 100K course page.
Predict your Canyons 100K finish time from a reference race result, adjusted for the course's 100 km and roughly 3,698 m of elevation gain. The overall cutoff is 20h.
About The Canyons Endurance Runs by UTMB - 100K
The Canyons Endurance Runs by UTMB - 100K covers 100 km (about 62 miles) with around 3,698 m of elevation gain, starting in China Wall Trailhead, Foresthill, California, USA. The overall cutoff is 20 hours.
Crew access is allowed at Michigan Bluff (36.4 km), Foresthill (45.9 km) and Drivers Flat (74 km). Drop bags are available at Foresthill.
Checkpoint data approximate - verify against the current official race guide at canyons.utmb.world before your race.
How the prediction works
Your result becomes a UTMB Index, mapped onto Canyons 100K by the calibrated model behind the ITRA / UTMB Index Estimator. Full methodology.
Build a training plan targeted at your Canyons 100K goal time
TrailMath uses these models to build periodized plans adjusted to your goals and terrain.
Build my plan