Search for July Half Marathons! Search for your next July half marathon at the July Half Marathon Calendar USA website page. The half marathon running event calendar currently has July half marathons 2026 and July half marathons 2027 as they roll in. For races that are late in posting their July 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