2026 Cal Tri Houston - 9.13.26

2026 Cal Tri Houston - 9.13.26 New for 2026, Cal Tri Houston! 5 EVENT OPTIONS. Sprint Triathlon, RunBikeRun, RunSwim, Swim, & 5K Run. Reverse Triathlon = run + bike + swim. Check out the course maps for more detailed information.  TO DO. Typhoon Texas Waterpark Houston AIRPORT. George Bush Intercontinental Airport (IAH) AIR TEMPERATURE (AVG). 70 F / 90 F WATER TEMPERATURE (AVG). 80 F.