Keys100 Ultra-Marathons 50mi

50M · Marathon, FL, US · 2027-05-15 · official site

Course

Distance	50.0 mi
Distance (metric)	80.5 km“There is also a 50-mile option from Marathon to Key West for individuals and teams.” source
Course type	point-to-point“There is also a 50-mile option from Marathon to Key West for individuals and teams.” source
Terrain	road, coastal“This is a pavement race, with approximately 75% run on paved bike paths and sidewalks. (keys100.com: "The course follows US Highway 1 for nearly 100 miles, much of it on the Florida Keys Overseas Heritage Trail, with the” source

Nearest town	Marathon“There is also a 50-mile option from Marathon to Key West for individuals and teams.” source
State	FL“Higgs Beach Key West, FL US 33340” source
Country	US“Higgs Beach Key West, FL US 33340” source
Race starts at	Marathon Garden Club, Marathon, FL“The Marathon Garden Club is the start location for the 50-mile races.” source
Nearest major airport	MIA“The closest and most convenient commercial airports are Miami International and Fort Lauderdale-Hollywood International.” source
Driving distance to airport	109.0 mi“Miami Airport (MIA) → Marathon, FL, USA. "Yes, the driving distance between Miami Airport (MIA) to Marathon is 109 miles." The road distance is 109 miles; the race start is the Marathon Garden Club, so this is a town-lev” source