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KEYS100 Ultramarathon

Key West, Florida, United States

calendar_today 15 May, 2027 – 16 May, 2027

directions_bike Cycling

directions_run Running

language Official Website

sell $240.00 – $1050.00

About the Event

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. This is a pavement race, with approximately 75% run on paved bike paths and sidewalks, parallel pedestrian bridges and portions of the old service road. The balance is run on the road shoulder facing traffic--and close to it. (Awareness and caution are paramount when running these sections.) 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!

Races Offered

100 Mile Team Relay

May 15, 2027

straighten

Distance — 100 Miles

terrain

Type — Cycling, Running

timer

05:00

sell

$1,050.00

100 Mile Individual Ultra

May 15, 2027

straighten

Distance — 100 Miles

terrain

Type — Cycling, Running

timer

05:30

sell

$355.00

50 Mile Individual Ultra

May 15, 2027

straighten

Distance — 50 Miles

terrain

Type — Cycling, Running

timer

09:00

sell

$305.00

50 Mile Team Relay

May 15, 2027

straighten

Distance — 50 Miles

terrain

Type — Cycling, Running

timer

09:00

sell

$540.00

50 Kilometer Individual Ultra

May 15, 2027

straighten

Distance — 50K

terrain

Type — Cycling, Running

timer

12:00

sell

$240.00

Weather History

These values represent the 3-year monthly averages for May in Key West.

thermostat Temperature

26.0° / 27.8°

wb_sunny Feels like

27.0° / 30.3°

light_mode Avg sunshine hours

12h 48m

water_drop Avg rainfall

1.8 mm

ac_unit Avg snowfall

—

air Avg wind speed

16.1 km/h (Gentle breeze)

opacity Sweat loss rate

Very high

terrain Course conditions

Hard and dry surface

sunny Max UV Index

High (7.2)

humidity_mid Humidity

75.5%

wb_twilight Sunrise

06:43

nightlight Sunset

20:03

About Key West

Learn more about the host city, Key West.

Key West, in the Florida Keys, is a city and an island of the same name. It is the county seat of Monroe County and is considered the southernmost city in the continental United States.