Great Divide Trail to Lake Louise is a 9.8 km (6.1 mi) one-way walk on the former Highway 1A, from Lake O’Hara parking to Lake Louise Drive. It’s an old paved road rather than a narrow mountain track: much of it runs through conifer forest, with a rough surface and gentle rises. Allow about 3–4 hours on foot one way; the listed two-hour time is for biking. Without a pickup at Lake Louise, you’ll retrace the route for a nearly 20 km day. This is a good choice if you want to cross the Continental Divide on the historic road, but the arch is the main landmark and the rest is a long corridor walk.