Javelina Jundred

The Javelina Jundred is a unique ultra running festival held annually in late October at McDowell Mountain Regional Park near Fountain Hills, Arizona. Known as the original costumed 100-mile trail run party, it features challenging 100-mile and 100-kilometer races on a rolling single-track course through the Sonoran Desert, showcasing scenic trails with saguaro cacti and granite boulders. The event includes a festive "Jalloween" atmosphere with costume parties and a night race called the Jackass Night Trail (31K).

It offers camping, crew tent, and RV accommodations, fostering a strong community vibe. The Javelina Jundred is also a Western States 100 qualifier, attracting elite and recreational runners alike. Visit the organization's website for the most recent information.