It serves as the main north-south thoroughfare through Duck Mountain Provincial Park, as well as providing a connection between Inglis and Grandview on its southern end, while also connecting Minitonas and Bonsman on its northern end.

[1] Provincial Road 366 starts in the Swan River Valley region of Manitoba, serving Bowsman and Minitonas, crosses the Duck Mountains, and then goes through west-central Manitoba from Grandview to Inglis.

PR 366 serves as the main north-south route through Duck Mountain Provincial Park.

[2] Since it was established, several changes and improvements have been made to the travel route: Provincial Road 485 (PR 485) is a 16.4-kilometre-long (10.2 mi) east–west spur of PR 366 in the Swan River Valley, providing access to local farms in the area as well as the locality of Lidstone.

The highway passes through the locality of Lidstone before travelling through several more kilometres of rural farmland, crossing the West Favel River before coming to an end at an intersection with PR 366 between Minitonas and Duck Mountain Provincial Park.