SOMO Half Marathon & 10K

Sunday, October 11, 2026. Lace up for an island run or lend a hand behind the scenes during the SOMO Marathon, Half Marathon & 10K, a Key West race weekend combining fitness, community, and scenic miles through the Southernmost City.

Participants can choose from multiple race distances, including the marathon, half marathon, and 10K, making the event accessible to runners taking on different challenges. The courses showcase Key West’s distinctive island setting while giving participants an opportunity to experience the destination on foot.

Those who would rather support the race can join the event’s volunteer team, with opportunities that may include race setup, water stations, course support, finish-line assistance, backup timing, and post-race breakdown. Volunteers help keep participants supported and the event running smoothly from start to finish.

Volunteer participation can also provide community-service hours and transferable race credit, adding another incentive for locals and visitors who want to contribute their time while experiencing the excitement of race day.

Whether you’re chasing a new finish-line goal, cheering on friends and family, or volunteering along the course, SOMO offers an active way to connect with Key West’s running community.

Sign up to run or volunteer and spend an October race day celebrating fitness, determination, and community in Key West.