Swim Across Benbrook Lake. From Holiday Park to Longhorn Park Boat Ramp the distance by google is 1.44 miles. I swam from Holiday Park to Longhorn Park Boat Ramp(off of Dirks road) and came up with the distance of 1.55, the difference is due to swimming around the little peninsula at Holiday park. I had KAYAK crew support to watch out for jetskis and boats. It gets choppy toward the water pump. Total Swim 3.08 miles. Good 5k for Masters who want brush up for 5 k open water swims. Great Ironman, Triathlete Swim.