161 kmTrail🇺🇸 Fountain Hills, United States

Javelina Jundred 100 Mile

Saturday, 31 October 2026In 20 days · Start 06:00

Halloween-weekend 100-miler on looping Sonoran desert singletrack in McDowell Mountain Regional Park, famous for costumes and its party atmosphere at Jackass Junction. Runnable and relatively flat, but desert heat is the real test.

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Facts checked 10 Oct 2026 against aravaiparunning.com.

Elevation gain

1,920 m

Mountain · ↓ 1,920 m

Highest point

758 m

above sea level

Temp at start

14°C

Peaks around 24°C

Entry fee

≈ $525

Open entry

Finishers

—

typical year

Course

Multiple laps

30h cut-off

Getting thereFly into PHX (Phoenix), about 40 km from the start

Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Mountain: about 1,920 m of climbing and 1,920 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

14°C

Peak during race

24°C

Humidity

34%

Chance of rain

Wind

10 km/h

Race day in past years

Historical averages for 31 October ±3 days, 2016–2025, from 06:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

Course records

Men: 12:10:12 · Will Murray (2025)
Women: 13:31:47 · Tara Dower (2025)

As of the 2025 season.

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

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<a href="https://irun42.com/race/javelina-100" title="Javelina Jundred 100 Mile on iRun42"><img src="https://irun42.com/badge/javelina-100.svg" width="300" height="120" alt="Javelina Jundred 100 Mile: course, elevation and race-day weather on iRun42" /></a>