KEYS100 Ultramarathon 2025

© © KEYS100 Ultramarathon

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!

Registration open
Register now

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!


24 Road Running races on 17 — 18 May 2025 in Key West

100 Mile Individual Ultra

May 18, 2019

The race starts at 06:15

160.9 km

from $290

100 Mile Team Relay

May 18, 2019

The race starts at 05:45

160.9 km

from $870

100 Mile Individual Ultra

May 16, 2020

The race starts at 06:00

160.9 km

from $275

100 Mile Team Relay

May 16, 2020

The race starts at 05:30

160.9 km

from $840

100 Mile Individual Ultra

May 15, 2021

The race starts at 05:30

160.9 km

from $275

100 Mile Team Relay

May 15, 2021

The race starts at 05:30

160.9 km

from $840

100 Mile Individual Ultra

May 21, 2022

The race starts at 05:30

160.9 km

from $285

100 Mile Team Relay

May 21, 2022

The race starts at 05:30

160.9 km

from $870

100 Mile Individual Ultra

May 17, 2025

The race starts at 05:30

160.9 km

from $360

100 Mile Team Relay

May 17, 2025

The race starts at 05:00

160.9 km

from $990

50 Mile Individual Ultra

May 18, 2019

The race starts at 09:45

80.5 km

from $275

50 Mile Individual Ultra

May 16, 2020

The race starts at 09:45

80.5 km

from $235

50 Mile Team Relay

May 16, 2020

The race starts at 09:30

80.5 km

from $450

50 Mile Individual Ultra

May 15, 2021

The race starts at 09:00

80.5 km

from $235

50 Mile Team Relay

May 15, 2021

The race starts at 09:00

80.5 km

from $450

50 Mile Individual Ultra

May 21, 2022

The race starts at 09:00

80.5 km

from $245

50 Mile Team Relay

May 21, 2022

The race starts at 09:00

80.5 km

from $450

50 Mile Individual Ultra

May 17, 2025

The race starts at 09:00

80.5 km

from $295

50 Mile Team Relay

May 17, 2025

The race starts at 09:00

80.5 km

from $525

50 Kilometer Individual Ultra

May 18, 2019

The race starts at 13:00

50 km

from $220

50 Kilometer Individual Ultra

May 16, 2020

The race starts at 13:00

50 km

from $205

50 Kilometer Individual Ultra

May 15, 2021

The race starts at 12:00

50 km

from $195

50 Kilometer Individual Ultra

May 21, 2022

The race starts at 12:00

50 km

from $205

50 Kilometer Individual Ultra

May 17, 2025

The race starts at 12:00

50 km

from $260

Weather for May 17, 2025

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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?

Contacts of the organizers & official website

Official site: http://keys100.com

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

[email protected]

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