Portsmouth High School, Portsmouth NH
Sunday, October 26th, 2025
The Seacoast Half Marathon is one of the longest-running half marathons in coastal New Hampshire. Join us for our 20th annual race on Sunday, October 26.
This year's beneficiary is an amazing nonprofit dedicated to improving lives in the Greater Seacoast.
You can even use your donation/fundraising to earn free registration in the 2025 Seacoast Half Marathon!
For more information and to register, visit the official event page: Seacoast Half Marathon.
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