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
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.
Quality Score
Runner Favorite9119 years running
~1,312 finishers a year
growing or steady
22% returning runners
USATF certified · 2 timing sources
runners from 27 states
winner 1:11:19
typical high 61°F
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
Historical Finish Times
How 17,954 finishers actually crossed the line across 19 years.
Most recent
2025
Total finishers
17,954
Median time
2:04:33
Latest turnout
942
States
47
Turnout by year
2017–2025
Hover the histogram to inspect specific finish times.
Explore More Journeys
Can't make it to Portsmouth? Discover other experiences that match your running style.
Search All Races
