Great Bay 55K

Stratham, United States • 24 Oct 2026

Great Bay 5K : Race for a Healthy Estuary

The Great Bay 5K is scheduled for October 24, 2026 at Stratham Hill Park in Stratham, New Hampshire. The event marks the 28th running of the race and serves as the final event in the Seacoast Road Race Series. Proceeds support the non-profit Great Bay Stewards, which focuses on conservation, education, community outreach, stewardship, and research of the Great Bay Estuary.

The 5-kilometer course passes the shores of Great Bay and is mostly downhill. Wheelchair racers are welcome; they start before the other runner and walker fields. Motorized wheelchairs are not permitted, and wheelchair participants are responsible for maintaining their own equipment.

Participants in the 5K receive a long-sleeve race shirt if they register by October 1, 2026; those who register later may claim a shirt on race day if any remain. All entrants receive a race bib with tear strips that can be redeemed for a free beer or cider at select establishments. The published registration fee for the 5K is $35.00. Visit the organization's website for the most recent information.

Race information

5 km
Great Bay 5k
Visit the organization's website for the most recent information.
Trail runs nearby

A roughly 3.8 mile trail race at Kingman Farm in Madbury, NH on July 26, 2026, featuring rolling nordic style paths and switchback singletrack; proceeds support the Doug Flutie Jr. Foundation for Autism and day of registration is available.

A community 5 km run in Derry, New Hampshire on August 8, 2026, with adult and kids categories and online registration closing August 7, 2026.

Trail runs over Vineyard Hill and through Bradley Palmer State Park offering 5K and 10K courses with one Start/Finish aid station, local prizes, and chip timing as part of the North Shore Trail Series.

Trail ultramarathon and half marathon in Bear Brook State Park, Allenstown NH on September 12, 2026. The ultramarathon distance varies year to year and the course is GPX only with minimal course markings.

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