KEYS100 Ultramarathon
Updated
Saturday, May 15, 2027, first start 5:00 AM, in Key West (Higgs Beach). Distances: 50K, 50 miles, 100 miles. Entry from $240 to $1050; the 100 miles goes from $355 to $395 after January 9.
Course and race notes
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.
In the organizer's words, from the race's own listing.
Race details
Date
Saturday, May 15
To Sunday, May 16, 2027 · in 189 days
Start time
5:00 AM
Earliest wave
Course
Road or path
Paved course
Distances
50K50 miles100 miles
Price
$240 to $1050
Plus the platform's processing fee
100 miles goes up after Sat Jan 9 (in 63 days)
Registration
Open
Online signup closes Sat May 15 (in 189 days)
Opened Jul 11, 2026