Conquer Arizona's borderlands gravel under endless desert skies.

The Spirit World 100 is a vibrant gravel cycling event and festival held annually in Patagonia, Arizona. In 2025, the event is scheduled for October 23–26 and features challenging routes through the stunning, rugged San Rafael Valley near the U.S.-Mexico border. Riders experience a festive, welcoming atmosphere blending gourmet food, live music, group activities, and gravel riding across diverse desert and mountain landscapes. The race is known for its inclusive spirit and memorable community experience.

The 100-mile route starts in Patagonia, AZ, and covers 101.8 miles with approximately 6,392 feet of elevation gain. The route features 95.5 miles of dirt/gravel roads that can be rutted, rocky, and washboarded, plus 6.3 miles of paved roads.

• Riders traverse the biodiverse 'Sky Islands' and panoramic borderlands scenery
• Unique 'Boomshakalaka bar' aid station at mile 90 offers water and Coca-Cola
• 6.5-hour time cutoff at mile 68 provides a safety check
• Festival atmosphere: group rides, live music, gourmet meals, and Arizona Trail fundraiser
• Welcoming, community-driven, all-levels cycling vibe