Registration for the the 2018 Hapalua is now open!  Race date: April 8, 2018 The registration entry is staggered and residents of Hawaii can now enter at an early entry rate through October 15.ENTER HERE U.S. mainland and Canadian residents enter from October 16 and all International residents can enter from November 1. The Hapalua is Hawaii’s largest half marathon with around 10,000 participants from…