It connects Olsen Mine and Madsen with the northern terminus of Highway 105 in the town of Red Lake.

It passes through a remote forested area, and encounters no communities of any significance outside of Red Lake.

[4] The route begins at Olsen Mine Road and travels east-northeast through thick boreal forest.

The highway passes north of Faulkenham Lake and travels parallel to a high-tension power line including the town of Redditt.

Continuing northeast, Highway 618 zig-zags through the forest, then enters Red Lake, where it is also known as Howey Street.