RunRace USA › New Hampshire › Seacoast Half Marathon
Seacoast Half Marathon
Portsmouth, New Hampshire · Sunday, October 25, 2026 · Half Marathon
Official race page & registration ↗Seacoast Half Marathon takes place on Sunday, October 25, 2026 in Portsmouth, New Hampshire. The race is run over Half Marathon. For anyone travelling in, Dover is about 9 miles away and Boston is about 51 miles away.
It is one of 40 races on the New Hampshire calendar that October. At $79, entry sits above the $30 median for a US half marathon.
- Date
- Sunday, October 25, 2026
- Location
- Portsmouth, New Hampshire
- Distances
- Half Marathon
- Entry fee
- from $79
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Portsmouth: check in Oct 24, out Oct 26.
Common questions
When is Seacoast Half Marathon?
Seacoast Half Marathon is scheduled for Sunday, October 25, 2026.
Where is Seacoast Half Marathon held?
Seacoast Half Marathon is held in Portsmouth, New Hampshire. It is about 9 miles from Dover and 51 miles from Boston.
What distances does Seacoast Half Marathon offer?
The listed distances are Half Marathon.
How much does Seacoast Half Marathon cost?
Entry is listed from $79. Check the official race page for the current price, which usually rises closer to race day.
How do I register for Seacoast Half Marathon?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
More races nearby
- Oct 20USS Albacore: A HistoryPortsmouth, NH
- Oct 252026 Tiger Run 12K/5KEnfield, NH
- Oct 25Dover Pumpkin Dash 5k 2026Dover, NH
- Oct 25Granite Gorge Yo-Yo Run.Keene, NH
- Oct 25Spofford Lake 10KSpofford, NH
See every race on the New Hampshire calendar, New Hampshire Half Marathons, or use the Race Finder for maps and filters.