Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. State Route 66 (SR 66) is a state highway in the U.S. state of California, running along a section of old U.S. Route 66 from La Verne east to San Bernardino, passing through Claremont, Upland, Rancho Cucamonga, Fontana and Rialto along Foothill Boulevard. In San Bernardino, it is the part of Fifth Street west of H Street (at the Interstate 215 interchange).SR 66 is part of the California Freeway and Expressway System, although it is neither a freeway nor an expressway.The route begins as Foothill Boulevard at the interchange with SR 210 in the city of La Verne. SR 66 heads southeast for a few miles before entering Pomona and turning due east. The highway continues into the city of Claremont, passing by Claremont Colleges, before crossing into Upland, San Bernardino County.