The Mount Hood Highway No. 26 (see Oregon highways and routes) is the Oregon Department of Transportation's designation for a 96.74-mile-long (155.69 km) highway from Portland east around the south side of Mount Hood and north via to Hood River. It is marked as U.S. Route 26 from Portland to near Mount Hood and Oregon Route 35 the rest of the way to Hood River. The portion from Sandy to Barlow Pass on the south flank of Mount Hood is aligned to the land portion of the historic Oregon Trail. It was developed in the 1840s as the Barlow Road.