Sat, May 15, 2027
Key West, Florida
Entry from $240 — listed fees can step up closer to event day.
Fees shown are the current listed entry fees — check the registration page before you go.
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. ) The Florida Keys, known locally as The Conch Republic , is a spectacular and laid-back sub-tropical paradise, surrounded by the turquoise waters of the Atlantic Ocean and Florida Bay/Gulf of Mexico. The Keys feature great fishing, kayaking, snorkeling and diving, hotels, resorts, B&B s and cuisine and cocktails to fit every budget.
There is entertainment to fit every taste, important history and a unique culture, sunsets that will keep you spellbound, special events going on throughout the year including KEYS100 , of course, and you don t need a passport to visit here! So, what are you waiting for? We ve saved a space for you!
KEYS100 Ultramarathon is scheduled for Sat, May 15, 2027 through Sun, May 16, 2027 in Key West, Florida. Confirm the start schedule on the registration page before race morning.
Listed entry fees currently run from $240 to $1050 depending on the event and route. Fees can step up closer to event day — check the registration page for current pricing.
The current listing carries 3 options: 100 Miles, 50 Miles, 50K. Route details live on the registration page.