Florida · 100 Miler · 50 Miler · 50K
KEYS100 Ultramarathon
KEYS100 Ultramarathon is a 100 Miler, 50 Miler and 50K event held in Key West, Florida. Its next confirmed date is Saturday, May 15, 2027.
- Race day
- May 15, 2027
- Location
- Key West, FL
Race details
- Date
- Saturday, May 15, 2027
- Location
- Key West, Florida
- Distances
- 100 Miler, 50 Miler, 50K
- Course
- Flat, entirely paved course along the Overseas Highway near sea level; the only rises are over causeway bridges such as the Seven Mile Bridge.
- Registration
- runsignup.com
- Official website
- keys100.com
About the KEYS100 Ultramarathon
Registration is open for the 19th Annual race across the islands of the Florida Keys--May 15-16, 2027. This chain of unique and inter-connected islands--some inhabited, some not--end in the City of Key West, just 90 miles from Cuba. This is a pavement race, with approximately 75% run on paved bike paths and sidewalks, parallel pedestrian bridges and portions of the old service road. The balance is run on the road shoulder facing traffic--and close to it. (Awareness and caution are paramount whe…
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Guides from the RaceRove blog
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- Blog All guides Planning advice for finding, choosing and travelling to races.
KEYS100 Ultramarathon: common questions
- When is the KEYS100 Ultramarathon?
- The next confirmed date is Saturday, May 15, 2027.
- Where is the KEYS100 Ultramarathon held?
- In Key West, Florida.
- What distances does the KEYS100 Ultramarathon offer?
- 100 Miler, 50 Miler and 50K.
- How do I register for the KEYS100 Ultramarathon?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.