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!
Oct 25, 2026
Distance — 13.1 Miles
Type — Running
08:00
$79.00
These values represent the 3-year monthly averages for October in Portsmouth.
Portsmouth is the third oldest city in the USA and is prominent in New Hampshire's seacoast region.
Read more launchExplore other exciting events happening in this same region.
location_on Salisbury, Massachusetts, US
calendar_today Mar 28, 2026
location_on Salisbury, Massachusetts, US
calendar_today Apr 04, 2026
Hand-picked events we think you’ll love.
Nov 21, 2026
The RUN Manatee 5k series offers THREE adventures to celebrate ONE community. Participants will discover Manatee County…
Read more
Nov 28, 2026
Join us for the annual Turkey Trails 5k/10k! A fun, Thanksgiving-themed event that is perfect for the whole family.The…
Read more
Dec 13, 2026
Join us for the annual Candy Cane Course 5k/12k! A fun, Christmas-themed event that is perfect for the whole family.Th…
Read more
Mar 21, 2027
WE ARE NOW OFFERING AN AQUABIKE DIVISION! Triathlon Information:Join us for the annual Space Coast Triathlon, held in …
Read more
