Texas Sun Showdown Half Marathon, Relay & 5k – San Antonio, TX 2026

ALL VIRTUAL EVENTS ARE NOW CLOSED! We invite you to join us for the 3rd AnnualTexas Sun Showdown Half Marathon, Relay & 5k Three great options: Want a challenge? Run the Half Marathon. Want to get a team together to relay? Grab your friends, find your team shirts or costumes! You can also run the 5K solo. Participants receive a Texas finisher medal, an awesome Texas theme shirt and delicious Texas barbecue food post race. TIME LIMIT FOR THE HALF MARATHON IS 4 HOURS. Relay Info: You will be prompted to join an existing Relay Team or create a new Relay Team during the registration process. Registration fee is a per person fee. All team members must register separately. Relay Categories: Open (All male, all female, or co-ed, any age) Masters (All male, all female, or co-ed, ages 40+) Super Masters (All male, all female, or co-ed, ages 50+) Mixed X (3 female, 1 male, any age) Mixed Y (3 males, 1 female, any age) Military Packet Pickup Info: Pre-Race Packet Pickup-Saturday June 13th 11-4 PM