Race Time Predictor

How fast will you run Canyons 100M?

Canyons 100M race stats pre-loaded (161 km, 5,500 m D+). Enter a known race result to get an elevation-adjusted finish time estimate.

161km5,500m D+Winner: ~17h50Cutoff: 35h

Full The Canyons Endurance Runs by UTMB - 100M course data: aid stations, cutoffs, course profile

161 kmdistance5,500 mD+6,639 mD-249km-effort

GentleSteadySteepVery steep

Your race (done)
About you
Your finish

1Your race

Canyons 100MOfficial course loaded · 161 km · 5,500 m D+Different race?

Have the GPX? Measure the exact course in the GPX Explorer

The course
161 km, but it costs 249 km-effort. The 6,639 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.

Distance (km)

Elevation gain (m)

Elevation loss (m)

Same as gain. Edit if different.

Finish time

Hours, or h:mm

From my Strava historyYour last 90 days of real training. Opens the TrailMath app.Read-only access to your activities. Nothing is posted to Strava, and no training plan is created until you ask for one.

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

216 km-effort (ITRA, gain only)249 km-effort

Add a past race or your index to get a finish time.

Canyons 100M finish times by UTMB Index

Predicted finish on the Canyons 100M course (161.0 km, 5,500 m D+) for each UTMB Index, with the margin to the 35h00 cutoff.

Canyons 100M: predicted finish time by UTMB Index
UTMB Index	Predicted finish	Average pace	Margin to cutoff
850	15h38	5:50 /km9:23 /mi	+19h22
800	17h05	6:22 /km10:15 /mi	+17h55
750	18h41	6:58 /km11:12 /mi	+16h19
700competitive	20h25	7:37 /km12:15 /mi	+14h35
650	22h19	8:19 /km13:23 /mi	+12h41
600	24h24	9:06 /km14:38 /mi	+10h36
550	26h40	9:56 /km16:00 /mi	+8h20
500mid-pack	29h09	10:52 /km17:29 /mi	+5h51
450	31h52	11:53 /km19:07 /mi	+3h08
400back of the pack	34h50	12:59 /km20:53 /mi	+0h10
350	38h04	14:11 /km22:50 /mi	3h04 past the cutoff
300	41h37	15:31 /km24:58 /mi	6h37 past the cutoff

The 35h00 cutoff sits at about Index 397. The typical winning time, 17h50, sits at about Index 776. At the 2026 edition, the median of the 150 finishers took 31h07, about Index 463. A model estimate, not an official ITRA or UTMB figure.

From a result you already have

What the predictor gives on Canyons 100M for a few common reference results.

Canyons 100M: predicted finish from reference results
Road marathon	3h00 → 26h24	3h30 → 30h48	4h00 → 35h12	4h30 → 39h36
50 km trail, 2,000 m D+	5h30 → 21h30	6h30 → 25h25	7h30 → 29h18	8h30 → 33h12

Road marathons use the tool's rougher power-law fallback.

To prepare each checkpoint, use the Canyons 100M aid station planner.

Canyons 100M course in numbers

Climbing per kmClimbing per mile: 34 m180 ft
ITRA km-effort: 216 (100M)
Highest point: 1,529 m5,016 ft
Biggest climb: +587 m over 4.6 km at 12.5% (up to Deadwood - 1)+1,926 ft over 2.9 mi at 12.5% (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: -382 m over 9.1 km at 3.6% (through Cool - 1)-1,253 ft over 5.7 mi at 3.6% (through Cool - 1)
Track climbing above 3%: 31%
Winning time / cutoff: 17h50 / 35h00 (2x the winner's time)

Section-by-section climbs, descents and grades are on the Canyons 100M course page.

Predict your Canyons 100M finish time from a reference race result, adjusted for the course's 161 km and roughly 5,500 m of elevation gain. The overall cutoff is 35h.

About The Canyons Endurance Runs by UTMB - 100M

The Canyons Endurance Runs by UTMB - 100M covers 161 km (about 100 miles) with around 5,500 m of elevation gain, starting in China Wall Trailhead, Foresthill, California, USA. The overall cutoff is 35 hours.

Crew access is allowed at Michigan Bluff (36.4 km), Foresthill (45.9 km), Drivers Flat (74 km), Cool - 1 (98.6 km) and Cool - 2 (118.3 km). Drop bags are available at Foresthill, Cool - 1 and Cool - 2.

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 100M by the calibrated model behind the ITRA / UTMB Index Estimator. Full methodology.

Build a training plan targeted at your Canyons 100M goal time

TrailMath uses these models to build periodized plans adjusted to your goals and terrain.

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