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
Course Info
USATF CertifiedCourse Type
Loop Course
Terrain
road
Difficulty
Ultra-Flat
Net Drop/km
+0.43 m
Separation
1.1%
USATF Certified Course
NH20001BK · Expires 2030
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Historical Performance
Median Finish
2:02:33
9:21/mi
Winning Time
1:11:19
5:27/mi
Finishers (2025)
1,309
States Represented
33 / 50
Gender Split
Finish Time Distribution
FASTER 25%
1:50:01
MEDIAN
2:02:33
SLOWER 25%
2:16:02
Race Day Weather
5-year historical avgStart (Low)
45°
Afternoon (High)
61°
Pleasant conditions — light layers at start, comfortable by finish
0.1"
Precipitation
10 mph
Wind
78%
Humidity
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