Javelina Jundred

The Javelina Jundred is a unique ultra running festival held in Fountain Hills, Arizona, featuring 100-mile and 100-kilometer trail runs, along with a festive night race called the Jackass Night Trail. Scheduled for October 25-26, 2025, this event combines endurance challenges with a vibrant party atmosphere, encouraging participants to dress in costumes for the "Jalloween" celebration. The course consists of a rolling single track trail primarily on the Pemberton Trail within McDowell Mountain Regional Park.

Additionally, the Javelina Jundred serves as a qualifier for the prestigious Western States 100 Mile Endurance Run, making it a significant event for ultra runners. Visit the organization's website for the most recent information.