- Join everyone in cruisin' the largest Route 66 event in the Western United States, as San Bernardino becomes the scene of mass transit, cruisin'-style! A newly expanded 35-square block park 'n' cruise route winds through historic downtown streets of San Bernardino for four days and nights of cruisin'. Every year over 500, 000 automotive and nostalgia enthusiasts attend California's Biggest ...www.route-66.org