KEYS100 Ultramarathon
Always double-check with the organizer's website! This page may contain affiliate links.
KEYS100 Ultramarathon
The KEYS100 Ultramarathon is the 19th annual set of point to point races held May 15 and 16, 2027 in the Florida Keys, finishing in Key West at Higgs Beach. Routes follow the Florida Keys Overseas Heritage Trail and the Overseas Highway (US 1).
The course is primarily on pavement, with approximately 75% on paved bike paths, sidewalks, parallel pedestrian bridges and portions of the old service road. The remaining sections run on the road shoulder facing traffic and close to it, so awareness and caution are required.
Distances include:
- 100 Miles individual and team relay
- 50 Miles individual and team relay
- 50 Kilometers individual
Races are point to point and require runner support and self-sufficiency. There are no aid stations along the route, although staffed timing stations are available if assistance is needed. Time limits are stated for each distance: 100-mile events have 32 hours from their start wave, 50-mile events have 20 hours, and the 50-kilometer event has 12 hours. Individual runners must have a support crew and may share a crew with one additional runner who must remain within the distance of a published meet-up location. Team relays carry their own supplies; 100-mile teams may include up to six runners and 50-mile teams up to three runners. Visit the organization's website for the most recent information.
