It stretches from Lake Fort Smith State Park , across the Ozark National Forest , to the Buffalo National River .
The Ozark Highlands Trail roams 218 miles ( 351 km ) through parts of seven counties in northwest Arkansas .
Ozark Highlands Trail stretches from Lake Fort Smith State Park , across the Ozark National Forest , to the Buffalo National River .
The Ozark Highlands Trail roams 218 miles ( 351 km ) through parts of seven counties in northwest Arkansas .