Halloween Trick or Trot 5K/10K/13.1 AUSTIN/ROUNDROCK

Halloween Trick or Trot 5K/10K/13.1 AUSTIN/ROUNDROCK takes place in Austin, Texas, on October 31, 2026. Every distance starts at 7:30 a.m.: the half marathon (13.1 miles), the 10K, the 5K and a family one-mile fun run. The Halloween date and the four formats make this a race weekend that a whole household can enter together.

A single mass start across four distances means the opening half-mile is busy, so line up honestly and let the field spread out before you look at your watch. For the 13.1, a twelve-week build with one weekly long run reaching eleven miles is the reliable preparation; the 10K and 5K sit comfortably inside normal training. The one-mile fun run is there for children and first-timers who want a bib without a distance to worry about.