The Daisy 104
Castle Rock, United States • 10-11 Oct 2026
The Daisy 104 and The Bobbi 52
The Daisy 104 and The Bobbi 52 are loop endurance events held near Castle Rock, Colorado. The event honors two women whose lives are described as long and full, and it is framed as a celebration of health, happiness, and community.
The course is a 3.25-mile loop, roughly a 5K. Participants choose between these distances:
- The Daisy: 104 miles, 32 loops
- The Bobbi: 52 miles, 16 loops
Participants may run solo or as part of a relay team, with options for two-person teams or four-person teams as the maximum size. The event runs as a continuous 24-hour-plus celebration and enforces a strict 30-hour cutoff for finishing efforts.
On-site amenities and features include camping under the stars, food trucks available all weekend, live music in the evening, family friendly access, and allowance of pets. Aid stations offer shots of local whiskey in honor of the event namesakes.
Awards are issued at the finish: solo 104-mile finishers receive a belt buckle, while all other finishers receive a finisher medal. Suggested items to bring include camping gear, family or guests, and provisions for pets. Visit the organization's website for the most recent information.