25 Hours in Frog Hollow

25 Hours in Frog Hollow is a 25-hour mountain bike endurance race held near Hurricane, Utah. Camping is situated below Gooseberry Mesa and close to Zion National Park. The race occurs in late fall, coinciding with the end-of-season bike weekend, around the time change and occasionally a week after if Halloween interferes. The event hub is Frog Town, serving as the base for riders between laps, meals, rest periods, and team handoffs. Participants can compete solo, as duos, or in teams of four or five. Co-ed corporate teams may include up to ten riders. Separate divisions exist for single-speed solo riders and a 12-hour solo option, offering the Frog Hollow setting without the full 25-hour duration. The atmosphere blends racing with a campout: participants bring companions, set up tents, ride overnight, share meals, socialize, forgo sleep, and conclude by the campfire.