Calstock is the northwestern terminus of Ontario Northland Railway.[1] in Northern Ontario, Canada, located in the unincorporated geographic township of Studholme in Cochrane District. It is located a few kilometres north of Highway 11, at the northern terminus of Highway 663, just south of the Constance Lake First Nation Reserve and about 30 minutes west (via Highway 11) of Hearst, Ontario.
- ^ "Calstock, Ontario". Profile Canada.