Come and be part of the 20th annual Seacoast Half Marathon on Sunday, October 26, 2025. The race showcases the scenic beauty of New Hampshire’s historic Seacoast — and 100% of the net proceeds for this year’s race go to support Birchtree’s autism programs!
The event kicks off and concludes at Portsmouth High School, taking you through the picturesque coastal communities of Rye and New Castle, New Hampshire. Plus, every participant will receive a long-sleeve race shirt and a medal! Register here today!