Seacoast Half Marathon
About this race
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. So pick up your running shoes, gather your friends, and register for the feel-good race of the year. And consider going the extra mile for your neighbors in need by making a donation when you register. You can also set up your own fundraising page and get family and friends to help with your fundraising efforts. You can even use your donation/fundraising to earn free registration in the 2025 Seacoast Half Marathon!
Join fellow runners on October 25, 2026 for the Seacoast Half Marathon. It's a fantastic Half-Marathon featuring a flat and fast course in Portsmouth.
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Running
Seacoast Half Marathon
The Seacoast Half Marathon will start and finish at Portsmouth High School, and travel through the beautiful coastal communities of Rye and New Castle, New Hampshire. You'll get a long-sleeve race shirt, and a half marathon finisher's medal. (Race shirt guaranteed for the first 800 registrants. Shirts may vary depending on availability.)
Weather Overview
These values represent the 20-year monthly averages for October in Portsmouth.
About Portsmouth
Seacoast Half Marathon takes place in Portsmouth, New Hampshire, United States. The local timezone is America/New_York.
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🏃 Plan Your Next Race in Portsmouth
Find upcoming events by distance:
- Portsmouth 5K Races Best Portsmouth routes for beginners and speed work.
- 10K Run Events in Portsmouth The most popular local distance in New Hampshire.
- Portsmouth Half Marathons Top-rated 21.1K courses in the Portsmouth area.
- Portsmouth Running Calendar 2026 See all upcoming race dates.
Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.
