San Antonio Marathon San Antonio, Texas, United States

The 2026 San Antonio Marathon is a running event organized by San Antonio Sports in partnership with the City of San Antonio. It takes place in downtown San Antonio and offers three race distances: a marathon on Sunday, December 6, 2026 for ages 16 and older, a half marathon on the same day for ages 14 and older, and a 5K on Friday, December 4, 2026 for ages 7 and older. The event offers discounts for military and first responders through GOVX, and supports group and team registrations for run clubs, companies, schools, and community groups.