The halves are series races. Both the Cypress and Katy halves belong to the Run Houston! series, so one registration can count toward series finisher swag. Our Houston race series guide explains the series, and the Houston half marathon guide lists every other half in the region.
Register before the extended window. Run Houston! races keep a standard price until a few days out, then switch to “extended online registration” at a higher fee. For the Katy Half that is $79.99 through February 3, then $119.99.
US Road Running visits monthly. Many other listings here are US Road Running’s themed 5K, 10K and half marathons in Katy and Cypress (Medal Madness, Gobbler, Holiday). The organizer calls them small, low-pressure races, which suit a training run more than a goal race.
Respect the heat outside winter. From late spring to early fall, run at sunrise, drink before you are thirsty and run by effort rather than pace. Stop and cool down for heavy sweating, weakness or clammy skin; call 911 for confusion or slurred speech. Our zone 2 guide covers training through it.
November 2026 is the busiest month on the current Katy & Cypress calendar, with 6 races.