Roslyn to McClain’s Pizzeria in Mandeville LA November 3, 2024 / Road Trips, Roslyn Cle Elum HomeBlogRoslyn to McClain’s Pizzeria in Mandeville LA Road trip to get some amazing pizza from McClain’s Pizzeria McClain’s Combo Pizza Stuffed Jalapenos were amazing Great view over Lake Pontchartrain Straight through (1-way) is about 2500 miles from Roslyn, WA to Mandeville, LA – but we took the scenic route, so it was more like 3000 miles. WELL WORTH IT!