Half marathons in San Antonio

22 upcoming races. See all races in San Antonio or half marathons worldwide.

• Now You See Me Foundation Monster Dash
  Oct 25, 2026 · 5–21.1 km
• Halloween Trick or Trot Run 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Oct 31, 2026 · 21.1 km
• Run for Mental Health 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Nov 14, 2026 · 21.1 km
• Coffee Lovers Run 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Nov 28, 2026 · 21.1 km
• OUTLAST SAN ANTONIO - 6 Hour Challenge
  Dec 12, 2026 · 29 km
• Run for Breast Cancer 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Dec 12, 2026 · 21.1 km
• A Merry Christmas Run 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Dec 26, 2026 · 21.1 km
• MLK Jr. Freedom Run 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Jan 16, 2027 · 21.1 km
• Alamo City Ultra - 25k
  Jan 23, 2027 · 25 km
• Coffee Lover Run SAN ANTONIO - 13.1 Half-Marathon Registration
  Jan 30, 2027 · 21.1 km
• Winter Dragon Race - The Rise of the Winter Dragon 21k
  Jan 31, 2027 · 21.1 km
• Winter Dragon Race - Virtual Half Marathon
  Jan 31, 2027 · 21.1 km
• Valentine's Day Run 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Feb 13, 2027 · 21.1 km
• Run Together Against Breast Cancer SAN ANTONIO - 13.1 Half-Marathon Registration
  Feb 27, 2027 · 21.1 km
• St. Paddy's Day Lucky Run 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Mar 20, 2027 · 21.1 km
• Sloth Run 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Apr 10, 2027 · 21.1 km
• Coffee Lover Run SAN ANTONIO - 13.1 Half-Marathon Registration
  Apr 24, 2027 · 21.1 km
• American Hero 25K Relay & Half Marathon - Virtual Half Marathon
  May 23, 2027 · 21.1 km
• American Hero 25K Relay & Half Marathon - 25k Relay Team
  May 23, 2027 · 25 km
• American Hero 25K Relay & Half Marathon - American Hero 13.1
  May 23, 2027 · 21.1 km
• Run Juneteenth Day 5K/10K/13.1 SAN ANTONIO - 13.1 Half-Marathon Registration
  Jun 19, 2027 · 21.1 km
• E-Dragon Run Festival - Golden Dragon Half- Marathon
  Sep 5, 2027 · 21.1 km