Austin's Half Ironman is the longest triathlon in the Austin area. The swim is held in Decker Lake, the site of many of the triathlons in the Austin area. The lake is not clear, but it is not too muddy. Expect some weeds near the shoreline.
The bike is a single 56-mile loop around Decker Lake on some roads that don't have a lot of traffic but can be chip-sealed and in poor condition. The course is east of Austin, so it is not very hilly.
The run is three loops on a pavement - it looks like the run course got rid of the grassy jeep trails and the Quadzilla Hill!
The triathlon finishes inside the arena at Decker Lake, making for a memorable finish.