It 's the only one of the big three that 's open to bikes .
It 's one of the big national scenic trails that the hikers do , along with the Appalachian Trail and Pacific Crest Trail .
one 's the only one of the big three that 's open to bikes .
It 's one of the big national scenic trails that the hikers do , along with the Appalachian Trail and Pacific Crest Trail .