Highland Lakes Challenge
The Monster Challenge consists of five open water swimming races averaging 3 miles each day for 5 consecutive days. The final placing is determined by the cumulative time for all five stages. The total distance is 15.6 miles with the expected water temperature between 25.5-26.6°C (78-80°F)
It was named one of America's Top 100 Open Water Swims.
Stage 1 on Day 1 is in Lake Buchanan
Stage 2 on Day 2 is in Inks Lake
Stage 3 on Day 3 is in Lake LBJ
Stage 4 on Day 4 is in Lake Marble Falls
Stage 5 on Day 5 is in Lake Travis
Each day's stage race begins at 9:00 am. No wetsuits are allowed. The water temperature is between 25.5-26.6°C (78-80°F).