Javelina 100K Finish Time Predictor
Javelina 100K race stats pre-loaded (98.3 km, 1,206 m D+). Enter a known race result to get an elevation-adjusted finish time estimate.
Full Javelina Jundred - 100K course data: aid stations, cutoffs, course profile
1. Your race
2. How should we estimate you?
Same as gain. Edit if different.
Hours, or h:mm
3. Your predicted finish
110.4 km-effort (ITRA, gain only)116.4 km-effort
Add a past race or your index to get a finish time.
Javelina 100K finish times by UTMB Index
Predicted finish on the Javelina 100K course (98.3 km, 1,206 m D+) for each UTMB Index, with the margin to the 29h00 cutoff.
| UTMB Index | Predicted finish | Average pace | Margin to cutoff |
|---|---|---|---|
| 850 | 6h20 | 3:52 /km | +22h40 |
| 800 | 6h55 | 4:13 /km | +22h05 |
| 750 | 7h34 | 4:37 /km | +21h26 |
| 700competitive | 8h16 | 5:03 /km | +20h44 |
| 650 | 9h02 | 5:31 /km | +19h58 |
| 600 | 9h53 | 6:02 /km | +19h07 |
| 550 | 10h48 | 6:36 /km | +18h12 |
| 500mid-pack | 11h48 | 7:12 /km | +17h12 |
| 450 | 12h54 | 7:53 /km | +16h06 |
| 400back of the pack | 14h06 | 8:37 /km | +14h54 |
| 350 | 15h25 | 9:25 /km | +13h35 |
| 300 | 16h51 | 10:17 /km | +12h09 |
The typical winning time, 8h30, sits at about Index 685. At the 2025 edition, the median of the 325 finishers took 16h57, about Index 297. A model estimate, not an official ITRA or UTMB figure.
From a result you already have
What the predictor gives on Javelina 100K for a few common reference results.
| Road marathon | 3h00 → 10h24 | 3h30 → 12h08 | 4h00 → 13h51 | 4h30 → 15h35 |
|---|---|---|---|---|
| 50 km trail, 2,000 m D+ | 5h30 → 8h42 | 6h30 → 10h18 | 7h30 → 11h52 | 8h30 → 13h27 |
Road marathons use the tool's rougher power-law fallback.
For arrival times at each checkpoint, use the Javelina 100K aid station planner.
Javelina 100K course in numbers
- Climbing per km
- 12 m
- ITRA km-effort
- 110 (100K)
- Highest point
- 735 m
- Biggest climb
- +191 m over 7.3 km at 2.5% (from Coyote Camp (loop 2))
- Longest descent
- -244 m over 13.5 km at 1.7% (through Rattlesnake Ranch (loop 3))
- Track climbing above 3%
- 12%
- Winning time / cutoff
- 8h30 / 29h00 (3.4x the winner's time)
Section-by-section climbs, descents and grades are on the Javelina 100K course page.
Predict your Javelina 100K finish time from a reference race result, adjusted for the course's 98.3 km and roughly 1,206 m of elevation gain. The overall cutoff is 29h.
About Javelina Jundred - 100K
Javelina Jundred - 100K covers 98.3 km (about 61 miles) with around 1,206 m of elevation gain, starting in McDowell Mountain Regional Park, Arizona, USA. The overall cutoff is 29 hours.
Crew access is allowed at Javelina Jeadquarters (end of loop 1) (35.9 km) and Javelina Jeadquarters (end of loop 2) (67.1 km). Drop bags are available at Jackass Junction (loop 1), Javelina Jeadquarters (end of loop 1), Jackass Junction (loop 2), Javelina Jeadquarters (end of loop 2) and Jackass Junction (loop 3).
Checkpoint data approximate - verify against the current official race guide at aravaiparunning.com before your race.
How the prediction works
Your result becomes a UTMB Index, mapped onto Javelina 100K by the calibrated model behind the ITRA / UTMB Index Estimator. Full methodology.
Build a training plan targeted at your Javelina 100K goal time
TrailMath uses these models to build periodized plans adjusted to your goals and terrain.
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