Search for your next May half marathon at the May Half Marathon Calendar USA website page. The half marathon running event calendar currently has May half marathons 2027 and May half marathons 2028 as they roll in. For races that are late in posting their May half marathons, we do our best to get those dates updated throughout the year, as race directors and race organizers update their websites. Updates can also be submitted via our easy to "Submit or update a half marathon"
