Arizona · 100 Mile · 100K · plus Jackass Night Trail Run distances
Javelina Jundred
Javelina Jundred is a 100 Mile, 100K and plus Jackass Night Trail Run distances event held in Fountain Hills, Arizona. Its next confirmed date is Saturday, October 31, 2026. About 1,000 runners take part across all distances.
- Race day
- October 31, 2026
- Location
- Fountain Hills, AZ
- Field size
- ~1,000 runners
Race details
- Date
- Saturday, October 31, 2026
- Location
- Fountain Hills, Arizona
- Distances
- 100 Mile, 100K, plus Jackass Night Trail Run distances
- Field size
- About 1,000 runners
- Course
- Rolling desert loops in McDowell Mountain Regional Park; relatively runnable with moderate gain per loop
- Registration
- ultrasignup.com
- Official website
- aravaiparunning.com
Registration, course & weather
- Registration status
- Registration status as last checked October 5, 2026: closed
- Entry fee
- Listed fee for the longest distance, $525 (from aravaiparunning.com, checked October 5, 2026)
- Start time
- 6:00 AM MST
- Course profile — 100 Mile
- Loop course; Trail surface; 6296 ft gain, 6296 ft loss (official course data)
- Course profile — 100K
- Loop course; Road surface; 3956 ft gain, 3956 ft loss (estimated from third-party elevation data)
- Course profile — 31K
- Loop course; Road surface; 1164 ft gain, 1164 ft loss (estimated from third-party elevation data)
About the Javelina Jundred
A Halloween-weekend 100-mile and 100K trail ultra run in costume over washing-machine loops of the Pemberton Trail in McDowell Mountain Regional Park.
Rankings and notes
- Rankings and awards
- Western States 100 qualifier and Golden Ticket race; one of the most famous and festive ultras in the country
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Javelina Jundred: common questions
- When is the Javelina Jundred?
- The next confirmed date is Saturday, October 31, 2026.
- Where is the Javelina Jundred held?
- In Fountain Hills, Arizona.
- What distances does the Javelina Jundred offer?
- 100 Mile, 100K and plus Jackass Night Trail Run distances.
- How many people run the Javelina Jundred?
- About 1,000 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Javelina Jundred?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Javelina Jundred?
- Registration status as last checked October 5, 2026: closed. Listed fee for the longest distance, $525 (from aravaiparunning.com, checked October 5, 2026).
- What time does the Javelina Jundred start?
- 6:00 AM MST.
Plan this race in RaceRove
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