Search the Louisiana Half Marathon Calendar! Search for your next Louisiana half marathon at the Louisiana Half Marathon Calendar USA website page https://www.halfmarathonsearch.com/half-marathons-louisiana. The half marathon running event calendar currently has Louisiana half marathons 2026 and Louisiana half marathons 2027 as they roll in. We strive to have all Louisiana half marathon dates posted one year in advance. For races that are late in posting their Louisiana half