26.2 miles
Marathon Races in Key West, FL
Next up: KEYS100 Ultramarathon on May 15, 2027. Every race below links to registration.
1
Upcoming Marathon
19
All Key West races
Upcoming Marathon Races in Key West
Other Race Distances in Key West
Running Stores in Key West
Race-day shoes, packet pickup partners and group runs. Local specialty stores fit you properly before you toe the line.
Key West Marathon FAQs
How many Marathon races are in Key West, FL? expand_more
Key West has 1 upcoming Marathon race on the calendar. New events are added as organizers open registration.
What is the next Marathon in Key West? expand_more
The next Marathon in Key West is KEYS100 Ultramarathon on May 15, 2027. Click the race for course details and the registration link.
How do I register for a Marathon in Key West? expand_more
Open any race above and click Register. You will go straight to the official registration page, usually on RunSignUp. Entry fees rise as race day approaches, so early registration is cheaper.
When is the best time of year to run a Marathon in Key West? expand_more
October through March is prime racing season in Key West, with cooler mornings and lower humidity. Summer races start early, often before 7am, to beat the heat.
Running a Marathon in Key West
Key West runners have 1 Marathon race to pick from this season, part of 19 upcoming races across all distances in the city. Florida courses are flat and fast, so a Marathon here is a good place to chase a personal best.
Register early. Most Key West races raise their entry fee two or three times before race day, and popular events sell out. Every card above goes straight to the official registration page.
Browse everything running in Key West, compare marathons statewide, or submit your race to get listed for free.