Join us for our 20th anniversary race!

Come be part of the 20th annual Seacoast Half Marathon on Sunday, Oct. 26, 2025. The race showcases the scenic beauty of New Hampshire’s historic Seacoast — and 100% of the net proceeds are donated to a worthy Seacoast-area nonprofit. The event kicks off and concludes at Portsmouth High School, taking you through the picturesque coastal communities of Rye and New Castle, NH. Plus, every participant will receive a long-sleeve race shirt and a medal!

Beat the May 1 price increase!

Registration now open!

2025 Beneficiary:

The Birchtree Center is a nonprofit organization that builds full and productive lives for individuals with behavior challenges, autism, and/or related disabilities.