The Half Distance Ruidoso Triathlon is a uniquely demanding event. This 36-week Half Distance Triathlon training plan is built precisely for those demands, especially for Masters athletes over 40. ✅ Swim-Ready for Altitude and Open Water The structured swim progression improves your efficiency and confidence in open water. Integrated video-supported drills help you adapt to the cooler lake temperatures and two-lap rhythm of Grindstone Lake—while endurance sets build the aerobic resilience ...