Race Details Event Date 10/25/26 Race start time(s) 8:30 AM; (Early walker start 8:00 AM) Registration start 7:00 AM Event Location Portsmouth High School Event Address 50 Andrew Jarvis Dr Event City Portsmouth Event State NH Race ID 556 Event Information Registration URL https://runsignup.com/Race/NH/Portsmouth/SeacoastHalfMarathon?remMeAttempt= Course Map Course certification map Website http://www.seacoasthalfmarathon.com Social Media Race Facebook page USATF Cert. No. NH20001BK Directions Portsmouth HS, Portsmouth NH. North side of the school. Results Live Results link https://results.raceroster.com/v3/events/3yxhdtu9zgzabbdd Online Results Athlinks Older Results Archived Results Recent Results 20262025202420232022202120192018201720162015 Race comments Race not held in 2020