Cheakamus Lake is a 570 ha. (5.7 sq km or 2.2 sq mi) lake in Garibaldi Provincial Park on the southeastern outskirts of the resort municipality of Whistler, British Columbia. Garibaldi Provincial Park is a wilderness park located in British Columbia, Canada, about 70km north of Vancouver. ... Whistler in late summer Whistler is a resort community in the province of British Columbia, Canada. ...