Sunday - May 17, 2026MYSTIC HALF MARATHON & 10K

With general registration at capacity, guaranteed entry to the Mystic Half Marathon & 10K is only available through the new charity partner program. Fundraise a minimum of $400 for one of the five worthy local causes (race registration fees additional).

Details: You MUST use the links below to “Join the Team” to access charity registration. By registering for one of the limited availability charity entries, you agree to fundraise a minimum of $400 by May 31, 2026, and will be responsible for covering any difference in funds raised. You may select from the charities below up until their charity entries are filled. Once all charity entries are filled, there are no additional guranteed registrations (a waitlist will be available for HMF Milestone members). Please contact registration@hartfordmarathon.com with questions.

View the fundraising leaderboard HERE.

Child & Family Agency of Southeastern Connecticut

With a mission to advance Individual and Community Health and to help reinforce our vision of a future where medical and mental health care is universally accessible and recognized as a fundamental right. The Mystic Half Marathon & 10K reinforces our role in fostering a healthier, more resilient community.

WEBSITE /// DONATE /// JOIN THE TEAM

CT Humane Society

A leading resource in the state for companion animal welfare, enriching the lives of families and communities through adoption services, medical care, education, and prevention of cruelty.

WEBSITE /// DONATE /// JOIN THE TEAM

Girls on the Run Southeastern CT

At Girls on the Run, we inspire girls to be joyful, healthy and confident using a fun, experience-based curriculum, which creatively integrates running. We envision a world where every girl knows and activates her limitless potential and is free to boldly pursue her dreams.

WEBSITE /// DONATE /// JOIN THE TEAM

John Kelley Memorial Fund

Established to memorialize the profound impact that John Kelley has on the Mystic community. Annually, scholarships are awarded to Fitch High School cross country or track athletes in John’s name.

WEBSITE /// DONATE /// JOIN THE TEAM

United Way Southeastern Connecticut

To inspire and coordinate the generosity and commitment that sustains a united, thriving community.

WEBSITE /// DONATE /// JOIN THE TEAM