Popular Canmore Hiking Trails Shut Down Over Rockslide Danger
A substantial section of a beloved recreational area west of Canmore, Alberta, has been closed by provincial authorities due to the imminent threat of further rockslides. The closure impacts the widely-used Grassi Lakes hiking trails and surrounding access routes.
Officials have confirmed that the affected area includes a significant portion of the Spray Lakes Road (Highway 742), also known as the Smith-Dorrien Trail. This closure specifically encompasses the Grassi Lakes day use area, the Grassi Lake interpretive trail, the Grassi Lake upper trail, and the Reclaimer Trails. The closure is in effect indefinitely.
Dangerous Conditions Prompt Closure
The decision to close the area stems from a recent rockslide that has created hazardous conditions for anyone using the roads. Analysis indicates that unstable rock masses remain positioned above the roadway, posing a significant risk of a secondary slide.
An assessment of the situation is currently underway. However, authorities have stated that a definitive timeline for necessary repairs and the subsequent reopening of the Grassi Lakes area remains uncertain at this time. A map detailing the boundaries of the closure has been made available online, and the public is urged to respect the restrictions and avoid the affected zone.
Alternative Access and Travel Advisories
While the Grassi Lakes area is inaccessible, other popular destinations within Peter Lougheed and Spray Valley Provincial Parks are still reachable. Day-use areas, the Spray Lakes West Campground, and trailheads for Ha Ling Peak, Miner’s Peak, East End of Rundle (EEOR), and Goat Creek can be accessed via Highway 40 South and the open sections of the Spray Lakes Road/Highway 742/Smith-Dorrien Trail heading northbound.
Visitors planning to access these alternative areas are advised to anticipate potentially longer travel times due to the current road conditions and rerouted access points.

