Races: Half Marathon Join us on March 16 and 17, 2013 for our Tenth Annual Seabrook Lucky Trail Marathon, Half Marathon, and Relay! This two day event features a Saturday half marathon and 2-person relay and a Sunday marathon, half marathon and 4-person relay. The Seabrook Lucky Trail Marathon, is held on the Seabrook nature trails surrounded by a diverse habitat of both fresh and salt marsh, the coastline of the Galveston Bay, wetlands, and wild-life and bird sanctuaries. The course consists of crushed granite surface. In addition to participating in a single race, runners can enter one of the challenges by finishing two races. This popular event has been known for its enthusiastic volunteers, great goodie bag and awesome post-race party.