Prepare for the Half Distance Triathlon Muscat with a 24-week triathlon training plan designed specifically for experienced athletes age 60 and over. Muscat combines a 1.9km open-water swim, a rolling 90km bike course, and a three-loop 21.1km run in warm conditions averaging about 75°F or 24°C. This senior-specific Half Distance Triathlon training plan develops the endurance, strength, pacing control, and durability needed to race the Muscat course efficiently while allowing appropriate ...