New Year's Run 5K/10K/13.1 AUSTIN/ROUNDROCK

New Year's Run 5K/10K/13.1 AUSTIN/ROUNDROCK takes place in Austin, Texas, on December 26, 2026. All four options — the half marathon (13.1 miles), the 10K, the 5K and a one-mile family fun run — start at 7:30 a.m. The event is untimed and open to runners and walkers of every level, entry includes a gift bag with a race shirt and a finisher medal, and a virtual version is offered for anyone covering the distance elsewhere.

Untimed does not mean easy, and 13.1 miles at the end of December still asks for the base you built in the fall. Ten to twelve weeks with a weekly long run is the usual path to a first half; beyond that, the value here is the rhythm — one long, honest effort between the holidays keeps January from starting cold. Runners already deep in a spring marathon build can slot in the 10K and leave the long run where it is.