Portsmouth, NH | Sunday, October 25, 2026Registration Open
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!
Available Distances
Awards & Prizes
Participant Giveaway
13.1 Miles: T-Shirt
Registration & Pricing
Distance
Price
Opens
Closes
13.1 Miles
$79.00
Mar 1
Apr 30
$89.00
May 1
Jul 31
$99.00
Aug 1
Oct 22
Bib Pick-up
DAY BEFORE: Saturday 10/25. Bib pick-up is again hosted by Marathon Sports (formerly Runner’s Alley) at 104 Congress Street in downtown Portsmouth from 10 am to 4 pm. We will be accepting paper registrations at this time as well. RACE DAY: Sunday 10/26. Bib pick-up is at the entrance of Portsmouth High School from 7 am to 8 am. We will be accepting paper registrations at this time as well.