2026 - KEYS100 Ultramarathon
2026 distances
Running
100 Mile Individual Ultra
Point-to-point running race from Key West Community Park in Key Largo to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 100-milers have 32 hours from the time their wave crosses the start line to complete the race. Each runner MUST have a support crew, but may share a crew with one additional runner who MUST stay within the distance of one published meet-up location of the crew at all times. Runners are self-sufficient; there are no aid stations along the route.
50 Mile Individual Ultra
The 50-mile race is a point-to-point running race from the Marathon Garden Club in Marathon to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 50-milers have 20 hours to complete the race from the time their wave crosses the start line. Each runner MUST have a support crew, but may share a crew with one additional runner who MUST stay within the distance of one published meet-up location of the crew at all times. Runners are self-sufficient; there are no aid stations along the route.
50 Kilometer Individual Ultra
The 50-kilometer race is a point-to-point running race from the Lower Keys Chamber of Commerce property in Big Pine Key to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 50-K runners have 12 hours to complete the course from the time their wave crosses the start line. Each runner MUST have a support crew, but may share a crew with one additional runner who MUST stay within the distance of one published meet-up location of the crew at all times. Runners are self-sufficient; there are no aid stations along the route.
100 Mile Team Relay
Point-to-point running race from Key Largo Community Park in Key Largo to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 100-mile teams have 32 hours to complete the race from the time their first runner crosses the start line. Teams of up to six runners decide their own strategy: runners do not have to run the same number of miles or "legs", nor run in order. Teams are self-sufficient, carrying their own food, water, ice, etc.
50 Mile Team Relay
Point-to-point running race from the Marathon Garden Club in Marathon to Key West along the "Florida Keys Overseas Heritage Trail"--Overseas Highway (US #1). 50-mile teams have 20 hours to complete the race from the time their first runner crosses the start line. Teams of up to three runners decide their own strategy: runners do not have to run the same number of miles or "legs", nor run in order. Teams are self-sufficient, carrying their own food, water, ice, etc.
Race-day weather
Conditions on May 16, 2026 — historical Open-Meteo data.
The sun rises at 6:42 AM and sets at 8:04 PM local time (EDT) in Key West on May 16, 2026 — 13h 21m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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2026 results — KEYS100 Ultramarathon
371 finishers across 5 distances · leading places in the 100 Mile Individual Ultra
| Place | Name | Time | Pace |
|---|---|---|---|
| 1 | Ivan Penalba Lopez | 15:55:18 | 9:33 /mi |
| 2 | Andres Villagran | 16:20:46 | 9:48 /mi |
| 3 | Dan Waldschmidt | 18:17:55 | 10:59 /mi |
| 4 | Ashley Leisher | 18:35:46 | 11:09 /mi |
| 5 | Joshua Locke | 18:48:59 | 11:17 /mi |
Every finisher is on the results page, filterable by distance, gender and age group.
Other races near Key West
Different organizers, within 40 miles, in the next three months
Fantasy Fest 5K Run/Walk
Montessori Key West 5K Run/Walk & Kids Fun Run
Pole Vault in Paradise 5k
2nd Annual Save Our First Responders 5K
🏃 Plan Your Next Race in Key West
Find upcoming events by distance:
- Key West 5K Races 20 races
- 10K Run Events in Key West 5 races
- Key West Half Marathons 2 races
- Key West Running Calendar 2026 25 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 26 Key West events
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