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The Rim of the World Scenic Byway is an 107-mile (172 km) National Forest Scenic Byway through the San Bernardino National Forest in the U.S. state of California.^[1] It consists of the following routes:

California State Route 138 from near the Cajon Pass to near Crestline
California State Route 18 from near Crestline to Big Bear Dam
California State Route 38 from Big Bear Dam to the San Bernardino National Forest boundary near Mill Creek Canyon

^ Federal Highway Administration (n.d.). "Rim of the World Scenic Byway". America's Byways. Federal Highway Administration. Archived from the original on October 29, 2011. Retrieved October 23, 2011.