Individual Runner Registration:
WELCOME TO THE 18th ANNUAL KEYS100®
Self-sufficiency:
Runners and their support crews are responsible for carrying all necessary supplies in the support vehicle, or purchasing them along the way—drinks, food and ice, equipment and supplies that might be needed during the race. On the course there is lots of race support: staffed timing stations, medical team, Sheriff's deputies at road crossings and race marshals, who monitor runner safety and rules compliance. There are stores and restaurants and portable toilets, but there are no race-sponsored aid stations offering food and drinks. Plan accordingly, and use resources available on the race website to help you prepare and organize before race weekend.
The crew’s job:
The individual runner's crew will leap-frog their runner along the course, stopping every few miles at approved locations only listed in “Course Details & Meet-up Locations” to provide the runner with water, food, ice, changes of clothes, nighttime gear and whatever else the runner might need during the race. IT IS THE CREW'S RESPONSIBILITY TO TRANSPORT THE RUNNER(S) TO AND FROM THE EVENT START AND FINISH LINES AND TO CARE FOR AND TRANSPORT THE RUNNER(S) IN THE EVENT THAT THEY DO NOT FINISH THE RACE.
Crew must register:
Crew members are considered dedicated runner volunteers. ALL participants in the race must register, using the “Runner Crew" registration process to comply. Be sure to enter the name of the runner being supported where requested to do so. Note: "PACERS" and any dedicated driver for an individual runner are considered "Crew" and must register accordingly.
Crew CHIEF must be designated no later than April 15:
When registering, you will be asked for the name of your crew chief. If you do not know at that time, log-in to your RunSignup account at a later date and add that information.
Vehicle:
Your support vehicle should be large enough to accommodate all necessary gear, allow room for luggage and space for crew and for you, the runner, if you take a break, while complying with strict rules regarding maximum vehicle size and type. Read the standard, "Vehicle size & type restrictions" very carefully and ask in advance if unsure if your vehicle strictly complies.
Runners may share a support crew*:
Every runner in the individual races must be supported by a dedicated crew, although up to two (2) runners may share one crew. To work successfully, both runners should be of similar capability and must run together or within a reasonable distance* of one another so that crew can do their job. Runner needing help? Runner drop? The crew is responsible for you and must be near you to be effective. Do NOT expect race staff to do your crew’s job. Be sure to watch the instructive “How to Crew” video under the "CREW INFO" tab. [*Runners sharing a crew may never be more than one meet-up location apart. Read the race rule carefully and fully comply on race day.]
NUMBER OF RUNNERS ALLOWED FOR 2026:
Individual 100-mile race: 250
Individual 50-mile race: 100
Individual 50-kilometer race: 100
REGISTRATION FEE SCHEDULE appears near the bottom of this page. Included is the refund schedule and details about the fundraising option to have your registration fee waived or refunded.
COMMUNICATIONS: In order to receive important and timely race updates and information, all registrants will be added to the race management (Ultra Sports) mailing list. Please add the Race Director to your address book: Bob Becker, bob@ultrasportsllc.com. You may unsubscribe at any time.
Registration fees and schedule
100 Mile Individual Race
Registration received through January 10, 2026 $335
Registration received from January 11-May 15, 2026 $375
On-site registration will be considered IF space is available.
50 Mile Individual Race
Registration received through January 10, 2026 $285
Registration received from January 11-May 15, 2026 $305
On-site registration will be considered IF space is available.
50 Kilometer Individual Race
Registration received through January 10, 2026 $230
Registration received January 11-May 15, 2026 $260
On-site registration will be considered IF space is available.
SPECIAL DISCOUNT OF 15% FOR FULL TIME ACTIVE DUTY MILITARY, FIRST RESPONDERS** & FULL-TIME STUDENTS
**"FIRST RESPONDERS" includes police, sheriff, firefighters and ambulance personnel--EMTs and paramedics--only. E-mail the race director to request a discount code. Be prepared to show ID at check-in. Bob Becker: bob@ultrasportsllc.com
REGISTRATION FEE REFUND SCHEDULE
100% refund of the entry fee actually paid after any discount through November 15, 2025. ("RunSignUp" fees are NOT refundable.) 50% refund of the entry fee actually paid after any discount from November 15, 20254, through March 15, 2026. ("RunSignUp" fees are NOT refundable.) The absolute deadline for refunds is March 15, 2026. DEFERRALS ARE NOT OFFERED FOR FUTURE YEARS. Repeat: KEYS100 offers refunds according to the schedule above; the race does NOT offer deferrals.
Be sure to consider race insurance, which is offered as an option by RunSignup at time of registration.
Request refunds online by signing into your "RunSignup" account or contacting the Race Director
REGISTRATION FEE REFUND OPTION: FUNDRAISING TO BEAT CANCER IN THE KEYS
Racing in the Florida Keys is a lot of fun, but the cause of beating cancer is as serious as it gets and is an important component of the KEYS100®. In that spirit, any runner in the individual competitions who collects paid donations to "The Cancer Foundation of the Florida Keys" in an amount equal to, or greater than, the targets listed below will have their race entry fee refunded in full.
At least four (4) times the scheduled registration fee—i.e., before any discounts: $1,280 for 100-milers, $1,100 for 50-milers, and $920 for 50-kilometer runners.
You will have the option to sign up as a fundraiser during the registration process. To become a fundraiser after you have registered, go to the "Runner Fundraising" page under the "MORE" tab.
Notify the race director of your accomplishment in order to generate the refund.
Bob Becker: bob@ultrasportsllc.com