KEYS100 100 Mile
KEYS100 100 Mile runs point to point from Key Largo to Key West, crossing the tropical island chain on exposed roads and bridges beside the ocean.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 23, 2026.
Quick facts
- Saturday start on May 15, 2027
- Key Largo-to-Key West point-to-point
- Crew-supported individual 100-miler
- Flat exposed highway course
2027 KEYS100 100 Mile registration
Registration for the 2027 KEYS100 100 Mile runs through the official registration page at runsignup.com.
About the KEYS100 100 Mile
The individual 100-mile race is separately entered and timed from 50-mile, 50K and relay categories and requires a support crew.
Course
A flat paved route follows the Overseas Highway corridor across more than forty islands before finishing at Higgs Beach.
Race-day weather
May heat, humidity, direct sun and limited shade are defining challenges, while coastal wind and storms can develop quickly.
Past KEYS100 100 Mile dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2027 | Saturday, May 15, 2027 | Upcoming | — |
| 2026 | Date TBD | — | — |
KEYS100 100 Mile FAQ
When is the KEYS100 100 Mile?
The 2027 KEYS100 100 Mile is on Saturday, May 15, 2027.
How do I register for the KEYS100 100 Mile?
Register for the KEYS100 100 Mile through the official registration link: marathonscout.com/go/keys100-100-mile/register. It opens the race registration page at runsignup.com.
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