HalfRuns
Seacoast Half Marathon

Seacoast Half Marathon

Race Date

Oct 25, 2026

Location

Portsmouth, NH

The Experience

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!

Logistics

Race Day

Sunday, October 25, 2026

Start Time

8:00 AM

Giveaway

T-Shirt

Start Location

Portsmouth High School, Portsmouth, NH, 03801

Directions

Course Info

USATF Certified

Course Type

Loop Course

Terrain

road

Difficulty

Ultra-Flat

Elevation Gain

0'

Net Drop/km

+0.43 m

Separation

1.1%

USATF Certified Course

NH20001BK

Relatively flat with minimal net elevation change. Loop course — start and finish are close together.

Race Day Weather

5-year historical avg

Start (Low)

45°

Afternoon (High)

61°

Pleasant conditions — light layers at start, comfortable by finish

0.1"

Precipitation

10 mph

Wind

78%

Humidity

Historical Finish Time Distribution

17,866 finishers across 19 years

1:054:10

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