16th Annual Seacoast Half Marathon Race Date - Sunday, Oct. 31, 2021 Home About Beneficiary Application Beneficiaries Water Stop Application Registration Online Mail-In Registration Race Info FAQs Race Training Tips Awards Sponsors Local Links Race Weekend Past Results Course Maps Description Streets Course Video Travel Hotels Restaurants Race Photos Contact Us In person Runner’s Alley, 104 Congress Street, Portsmouth, NH 03801 By phone 1.603.430.1212 By email Click Here