Seacoast Half Marathon
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Seacoast Half Marathon
The Seacoast Half Marathon takes place in Portsmouth, New Hampshire on October 25, 2026, with the course starting and finishing at Portsmouth High School. Registration is capped at 1250 participants; the event listing shows 1,216 participants.
The route winds through the historic coastal communities of Portsmouth, Rye, and New Castle. The course is described as mostly flat with a few rolling hills and offers views of woodlands, salt marshes, the rugged coastline, working waterways, historic homes, and Portsmouth Harbor.
The event is organized as a local charitable race. One hundred percent of the net proceeds go to a nonprofit beneficiary. The 2026 beneficiary is Krempels Brain Injury Center, a nonprofit that provides evidence based programming, shared experiences, and community support for people living with acquired brain injury.
Every participant receives a long sleeve race shirt and a medal. The event includes a team competition with awards for the fastest and largest teams. Volunteers are offered a Seacoast Half shirt, coffee, and other treats for on- and off-course roles. Visit the organization's website for the most recent information.
