The Horseneck Half & 3.5M

The Horseneck Half & 3.5M

The Horseneck event offers two measured road races that start and finish at DCR Horseneck Beach State Reservation in Westport, MA. The courses provide ocean views, a seaside finish, and parts that pass rolling farmland and local vineyards.

Distances:

• 13.1 miles Half Marathon
• 3.5 miles 3.5M

The Half Marathon follows a clockwise loop including John Reed Road, Route 88, Drift Road, Hixbridge Road, Horseneck Road, East Beach Road, and West Beach Road. The Half includes five water stops at mile markers 2.5, 5.5, 8.3, 11.0, and 12.1. The 3.5M follows a shorter clockwise route with extensive ocean views including Gooseberry Island and about a mile along the ocean returning to Horseneck Beach; it has one water stop and features Skratch Labs rehydration products.

Participant limits and registration tiers are published for 2027. The Half is limited to the first 1200 entrants and the 3.5M to the first 500. Fee tiers include legacy, early, regular, late, and race weekend pricing with different rates for each distance.

All entrants receive a technical race shirt and free coffee at the start and finish. Half Marathon finishers receive a medal. Post race provisions include a hot meal, a beer or nonalcohol alternative ticket, recovery drinks, and music. EMS personnel will be located at water stops and the start/finish. The course is open to traffic except the start and finish areas; police will staff intersections and runners are asked to stay to the right. There are no refunds; race management may modify, shorten, or cancel the event for safety reasons. Visit the organization's website for the most recent information.

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