The highway goes to pass through the community before leaving Lamar and continuing east through rural areas before entering Johnson City.

US 19E/US 321/SR 37/SR 67 starts gaining some gradual elevation and eventually crosses a series of bridges over the Doe River at the Valley Forge community just outside of the Elizabethton city limits (a left turn off SR 67 and onto Beck Moutanin Road after the first bridge is an alternative route to both the TVA Watauga Dam and the TVA Wilbur Dam).

Upon leaving Hampton, US 321/SR 67 again continually increases in elevation and roughly runs for several miles parallel to the shoreline of the massive Watauga Lake, through the Cherokee National Forest.

At Doeville, it junctions with SR 167, which continues southeastward up the Roan Creek Valley to emerge in the Shouns Crossroads area of southern Mountain City.

US 421/SR 34/SR 67 then pass through some rugged mountainous terrain before entering Trade, where SR 67 splits off from US 421/SR 34, becoming a secondary highway and heading eastward up the Jenkins Creek Valley toward North Carolina.