2025 - KEYS100 Ultramarathon
2025 distances
Running
100 Mile Individual Ultra
Point-to-point running race from the Divers Direct shopping center in Key Largo to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 100-milers have 32 hours from the time their wave crosses the start line to complete the race. Each runner MUST have a support crew, but may share a crew with up to two additional runners but who MUST stay within the distance of one published meet-up location of the crew at all times. There will be no traditional aid station support along the route. KEYS100 is sanctioned by USA Track & Field.
50 Mile Individual Ultra
The 50-mile race is a point-to-point running race from the Marathon Garden Club in Marathon to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 50-milers have 20 hours to complete the race from the time their wave crosses the start line. Each runner MUST have a support crew, but may share a crew with up to two additional runners but who MUST stay within the distance of one published meet-up location of the crew at all times. There will be no traditional aid station support along the route. KEYS100 is sanctioned by USA Track & Field.
50 Kilometer Individual Ultra
The 50-kilometer race is a point-to-point running race from the Lower Keys Chamber of Commerce property in Big Pine Key to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 50-K runners have 12 hours to complete the course from the time their wave crosses the start line. Each runner MUST have a support crew, but may share a crew with up to two additional runners but who MUST stay within the distance of one published meet-up location of the crew at all times. There will be no traditional aid station support along the route. KEYS100 is sanctioned by USA Track & Field.
100 Mile Team Relay
Point-to-point running race from the Divers Direct shopping center in Key Largo to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 100-mile teams have 32 hours to complete the race from the time their first runner crosses the start line. Teams of up to six runners decide their own strategy: runners do not have to run the same number of miles or "legs", nor run in order. Teams are self-sufficient, carrying their own food, water, ice, etc. KEYS100 is sanctioned by USA Track & Field.
50 Mile Team Relay
Point-to-point running race from the Marathon Garden Club in Marathon to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 50-mile teams have 20 hours to complete the race from the time their first runner crosses the start line. Teams of up to three runners decide their own strategy: runners do not have to run the same number of miles or "legs", nor run in order. Teams are self-sufficient, carrying their own food, water, ice, etc. KEYS100 is sanctioned by USA Track & Field.
Race date Weather
Conditions on May 17, 2025 — historical Open-Meteo data.
About Key West
KEYS100 Ultramarathon takes place in Key West, Florida, United States. The local timezone is America/New_York.
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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.