The Keys 100, scheduled for May 17-18, 2025, is a challenging ultra marathon held along the scenic Florida Keys, starting in Key Largo and finishing in Key West. Runners can choose from multiple race distances: a 100-mile race, a 50-mile race from Marathon to Key West, and a 50-kilometer race from Big Pine Key to Key West. Teams of up to 6 runners can participate in the 100-mile race, and all events end at Higgs Beach in Key West, providing an unforgettable oceanfront finish.
Races
100 Mile
50 Mile
50km
Race Date:
17 May, 2025
The KEYS100 Ultramarathon’s 100-mile race, set for May 17, 2025, takes runners from Key Largo to Key West along the iconic Overseas Highway. Organized by Ultra Sports, LLC, participants have 32 hours to complete the course, starting at 5:40 AM.
Race Date:
17 May, 2025
The KEYS100 Ultramarathon’s 50-mile race on May 17, 2025, takes runners from Marathon to Key West along the picturesque Overseas Highway. With a 20-hour cutoff, this race is organized by Ultra Sports, LLC and begins at 9:00 AM.
Race Date:
17 May, 2025
The KEYS100 Ultramarathon’s 50-kilometer race on May 17, 2025, runs from Big Pine Key to Key West along the scenic Overseas Highway. Organized by Ultra Sports, LLC, this race has a 12-hour cutoff, starting at 12:00 PM.
Weather based on historical averages.
FAQs
What is the Keys 100 Mile?
How long is the Keys 100 Mile?
Where does the Keys 100 Mile take place?
What is the elevation gain of the Keys 100 Mile?
How can I prepare for the Keys 100 Mile?
How do I choose the right training plan for the Keys 100 Mile?
The KEYS100 Ultramarathon’s 100-mile race, set for May 17, 2025, takes runners from Key Largo to Key West along the iconic Overseas Highway. Organized by Ultra Sports, LLC, participants have 32 hours to complete the course, starting at 5:40 AM.
The Keys 100 Mile is 161km long.
The Keys 100 Mile takes place in Key Largo, Florida, USA.
Runna classifies the Keys 100 Mile elevation profile as Rolling.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Keys 100 Mile?
The KEYS100 Ultramarathon’s 100-mile race, set for May 17, 2025, takes runners from Key Largo to Key West along the iconic Overseas Highway. Organized by Ultra Sports, LLC, participants have 32 hours to complete the course, starting at 5:40 AM.
How long is the Keys 100 Mile?
The Keys 100 Mile is 161km long.
Where does the Keys 100 Mile take place?
The Keys 100 Mile takes place in Key Largo, Florida, USA.
What is the elevation gain of the Keys 100 Mile?
Runna classifies the Keys 100 Mile elevation profile as Rolling.
How can I prepare for the Keys 100 Mile?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Keys 100 Mile?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Keys 50 Mile?
How long is the Keys 50 Mile?
Where does the Keys 50 Mile take place?
What is the elevation gain of the Keys 50 Mile?
How can I prepare for the Keys 50 Mile?
How do I choose the right training plan for the Keys 50 Mile?
The KEYS100 Ultramarathon’s 50-mile race on May 17, 2025, takes runners from Marathon to Key West along the picturesque Overseas Highway. With a 20-hour cutoff, this race is organized by Ultra Sports, LLC and begins at 9:00 AM.
The Keys 50 Mile is 80km long.
The Keys 50 Mile takes place in Key Largo, Florida, USA.
Runna classifies the Keys 50 Mile elevation profile as Rolling.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Keys 50 Mile?
The KEYS100 Ultramarathon’s 50-mile race on May 17, 2025, takes runners from Marathon to Key West along the picturesque Overseas Highway. With a 20-hour cutoff, this race is organized by Ultra Sports, LLC and begins at 9:00 AM.
How long is the Keys 50 Mile?
The Keys 50 Mile is 80km long.
Where does the Keys 50 Mile take place?
The Keys 50 Mile takes place in Key Largo, Florida, USA.
What is the elevation gain of the Keys 50 Mile?
Runna classifies the Keys 50 Mile elevation profile as Rolling.
How can I prepare for the Keys 50 Mile?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Keys 50 Mile?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Keys 50km?
How long is the Keys 50km?
Where does the Keys 50km take place?
What is the elevation gain of the Keys 50km?
How can I prepare for the Keys 50km?
How do I choose the right training plan for the Keys 50km?
The KEYS100 Ultramarathon’s 50-kilometer race on May 17, 2025, runs from Big Pine Key to Key West along the scenic Overseas Highway. Organized by Ultra Sports, LLC, this race has a 12-hour cutoff, starting at 12:00 PM.
The Keys 50km is 50km long.
The Keys 50km takes place in Key Largo, Florida, USA.
Runna classifies the Keys 50km elevation profile as Rolling.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Keys 50km?
The KEYS100 Ultramarathon’s 50-kilometer race on May 17, 2025, runs from Big Pine Key to Key West along the scenic Overseas Highway. Organized by Ultra Sports, LLC, this race has a 12-hour cutoff, starting at 12:00 PM.
How long is the Keys 50km?
The Keys 50km is 50km long.
Where does the Keys 50km take place?
The Keys 50km takes place in Key Largo, Florida, USA.
What is the elevation gain of the Keys 50km?
Runna classifies the Keys 50km elevation profile as Rolling.
How can I prepare for the Keys 50km?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Keys 50km?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Tags:
Coastal
Team
Relay
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Keys 100 Ultramarathon or Ultra Sports, LLC. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Keys 100 Ultramarathon website.
