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Seacoast Half Marathon

Sun October 26, 2025 Portsmouth, NH 03801 US Directions

Course

Seacoast Half Marathon   Seacoast Half Marathon

The Seacoast Half Marathon course is fabulous, fast, and mostly flat with rolling hills. It includes local and town roads through urban Portsmouth, rural Rye, and historic and quaint New Castle, New Hampshire. The course features striking views of woodlands, salt marsh, the rugged seacoast, working and recreational waterways, historic homes, and the Portsmouth Harbor. There are mile markers all along the course, and split clocks at 1 mile, 5 miles, and 10 miles. There are five liquids stations with water and Gatorade on the course, approximately every two miles, and Port-a-potties just before mile 2 and mile 8. Traffic control and course marshals are located at all major intersections to guide you through the course.

USATF-NE Course Certification

NH20001BK

Course Records

1:08:02 — Teage O'Connor, Burlington, VT (2018)
1:17:19 — Andrea Walkonen, Lebanon, NH (2012)

Street Listing

Portsmouth HS (Summit Drive) Start.
Right on South Street to Broad Street.
Right on Broad Street to Jones Street.
Left on Jones Street to Sagamore Road.
Right on Sagamore to the Foye’s Corner traffic circle. Download a (pdf) of the street names.
Bear left onto Pioneer Road.
Pioneer Road to Brackett Road. Right onto Brackett Road.
Brackett Road to Parsons Road. Bear left onto Parsons Road.
Parsons Road to Marsh Road. Go straight on Marsh to Rt. 1A.
Left onto Rt. 1A, and past Oriorne Point Park, and Brackett Road.
Rt. 1A/Pioneer Road to Foye’s Corner, then bear right onto Sagamore Avenue.
Sagamore Avenue to Wentworth Road/Rt. 1B. Right onto Rt. 1B.
Rt. 1B through New Castle onto Portsmouth Avenue, and then Newcastle Avenue.
Newcastle Avenue through the stop sign, and straight to South Street.
Left onto South Street to Summit Drive.
Left onto Summit Drive and into the Portsmouth High School grounds to the finish line.

 

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