🏞 Half Distance Triathlon Pennsylvania – HAPPY VALLEY Train with Purpose. Race with Confidence. Prepare to experience the Half Distance Triathlon in Pennsylvania like never before—set in the breathtaking landscape of Bald Eagle State Park. The course begins with a 1.2-mile swim in the tranquil Foster Joseph Sayers Lake (avg. temp 76°F/24°C), followed by a scenic 56-mile bike ride across Hublers Ridge, Pleasant Gap, and Happy Valley farmland. Then lace up for a 13.1-mile run through the ...