KEYS100 Ultramarathon
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KEYS100 Ultramarathon : Florida Keys
KEYS100 is the 19th annual ultramarathon event held May 15-16, 2027, across the islands of the Florida Keys. The main 100-mile race is a point to point course from Key Largo to Key West, with all races finishing at Higgs Beach on the Atlantic Ocean in Key West. The event is produced by Ultra Sports LLC.
Race distances offered:
- 100 miles from Key Largo to Key West
- 50 miles from Marathon to Key West
- 50 kilometers from Big Pine Key to Key West
Individual runners must have a support crew. There are no aid stations or water stops along the route; individuals and teams are expected to be self-sufficient. Crews leap-frog their runner at approved meet-up locations to provide water, food, ice, clothing and night gear. Two runners may share one crew only if they run together for the entire race and do not separate by more than one allowable meet-up location. Crews also are responsible for transporting runners to the start and from the finish and for assisting a runner who cannot continue.
Relay teams may include up to six runners for the 100-mile race and up to three runners for the 50-mile race. Teams set their own leg lengths and exchange strategy using allowable exchange locations published in the Race Guide.
On-course support includes race marshals, medical staff, timing monitors and sheriff deputies for traffic control. Timing equipment is placed at strategic locations and packet pick-up and check-in are organized at specified locations, with the Holiday Inn Key Largo serving as primary race headquarters. Orientation materials and a live experts panel are provided prior to race day. Visit the organization's website for the most recent information.
