KEYS100 Ultramarathon

The KEYS100 Ultramarathon is a premier running event taking place in the scenic Florida Keys, specifically from May 17-18, 2025. This ultramarathon features multiple race options, including a 100-mile individual ultra, a 50-mile individual ultra, a 50-kilometer individual ultra, and team relays for both 100 and 50 miles. The course offers a unique blend of off-road and paved paths, showcasing the stunning landscapes of the Keys.

Participants can enjoy the vibrant local culture, cuisine, and recreational activities while challenging themselves in this exciting endurance event. Registration is currently open for interested runners. Visit the organization's website for the most recent information.