Short review
Registration is open for the 17th Annual race across the islands of the Florida Keys--May 17-18, 2025. 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 off-road and the balance on the road shoulder facing traffic. 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!
Road Running , Walk
Distance:
Ultramarathon
Price:
from $195
Organized since 2015
Short review
Registration is open for the 17th Annual race across the islands of the Florida Keys--May 17-18, 2025. 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 off-road and the balance on the road shoulder facing traffic. 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!
May 18, 2019
The race starts at 06:15160.9 km
from $290
May 18, 2019
The race starts at 05:45160.9 km
from $870
May 16, 2020
The race starts at 06:00160.9 km
from $275
May 16, 2020
The race starts at 05:30160.9 km
from $840
May 15, 2021
The race starts at 05:30160.9 km
from $275
May 15, 2021
The race starts at 05:30160.9 km
from $840
May 21, 2022
The race starts at 05:30160.9 km
from $285
May 21, 2022
The race starts at 05:30160.9 km
from $870
May 17, 2025
The race starts at 05:30160.9 km
from $360
May 17, 2025
The race starts at 05:00160.9 km
from $990
May 18, 2019
The race starts at 09:4580.5 km
from $275
May 16, 2020
The race starts at 09:4580.5 km
from $235
May 16, 2020
The race starts at 09:3080.5 km
from $450
May 15, 2021
The race starts at 09:0080.5 km
from $235
May 15, 2021
The race starts at 09:0080.5 km
from $450
May 21, 2022
The race starts at 09:0080.5 km
from $245
May 21, 2022
The race starts at 09:0080.5 km
from $450
May 17, 2025
The race starts at 09:0080.5 km
from $295
May 17, 2025
The race starts at 09:0080.5 km
from $525
May 18, 2019
The race starts at 13:0050 km
from $220
May 16, 2020
The race starts at 13:0050 km
from $205
May 15, 2021
The race starts at 12:0050 km
from $195
May 21, 2022
The race starts at 12:0050 km
from $205
May 17, 2025
The race starts at 12:0050 km
from $260
Weather for May 17, 2025
°F
Wind: m/s.
.
Very Good for running
Past weather
May 21, 2016
73.81 °F, wind 0.76m/s
Rain overnight..
May 20, 2017
90.9 °F, wind 0.92m/s
Partly cloudy starting in the afternoon, continuing until evening..
May 19, 2018
68.82 °F, wind 2.23m/s
Rain in the afternoon and evening..
May 18, 2019
74.4 °F, wind 0.98m/s
Partly cloudy throughout the day..
May 16, 2020
74.09 °F, wind 0.98m/s
Partly cloudy throughout the day..
May 15, 2021
°F, wind m/s
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May 21, 2022
°F, wind m/s
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May 20, 2023
°F, wind m/s
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May 18, 2024
°F, wind m/s
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Nov 10, 2024
°F, wind m/s
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What to wear on your run?
We recommend checking the official website for up-to-date information.
The information about KEYS100 Ultramarathon is based on information provided by the organizers or found on the official website of the event.
If you have noticed any mistake, please let us know at
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