Roughly 35 kilometres (22 mi) in length, the route connects Highway 129 to the town of Sultan and to Wakami Lake Provincial Park.

The highway travels southeast for 14 kilometres (8.7 mi), crosses Little Wenebegon Lake then curves to the east.

It is mostly straight from that point to its eastern terminus at the Sultan Industrial Road, passing clear cut forests along the way.

In 2016, traffic surveys conducted by the ministry along the route showed that on average, 180 vehicles used the highway daily.

[4] The following table lists the major junctions along Highway 667, as noted by the Ministry of Transportation of Ontario.