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Seacoast Half Marathon — Portsmouth, NH

Seacoast Half Marathon

Sunday, October 25, 2026Portsmouth, NHHalf Marathon

Registration 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 dona...

Race

Surface

Road

13.1 Miles

Oct 258:00 AM

Shirt

$89

$99 after Jul 31

Location

13.1 Miles

Oct 258:00 AM

Shirt

$89

$99 after Jul 31

Not affiliated with this event. Official website. We may earn a commission on registrations.

Portsmouth High School

Portsmouth, NH 03801

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