63.3 miles: 1 hours, 5 minutes
This is the land of Lyndon B. Johnson, bluebonnets and, of course, rugged hills. Sprawling Texas ranches mix with grazing Longhorn cattle and ranges lined with cottonwood and mesquite. The best time to hit this stretch of US 281 is in spring, when wildflowers carpet the landscape. Peek at the serpentine Colorado River near Marble Falls.