This is a list of secondary highways in Timiskaming District, most of which serve as logging roads or provide access to the isolated and sparsely populated areas in the Timiskaming District of northeastern Ontario.
Secondary Highway 558, commonly referred to as Highway 558, is a secondary highway in the Canadian province of Ontario. Located in the Timiskaming District, the highway begins at the western city limits of Temiskaming Shores, three kilometres west of Highway 11 along Mowat Landing Road. It extends westerly for 20 kilometres (12 mi), passing through the community of Button's Corners and ending at the Montreal River in the community of Mowat Landing. Some cottages and a public boat launch are at the western terminus.
Secondary Highway 562, commonly referred to as Highway 562, is a secondary highway in the Canadian province of Ontario. Located in the Timiskaming District, the highway begins at an intersection with Highway 65 at McCool. It extends northerly for 3 kilometres (1.9 mi), and then turns easterly for 12 kilometres (7.5 mi), ending at a junction with Highway 11 just outside Thornloe.
Highway 564
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Highway 566
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Secondary Highway 569, commonly referred to as Highway 569, is a secondary highway in the Canadian province of Ontario. Located within Timiskaming District, the highway spans a distance of 28.3 kilometres (17.6 mi). Commencing at a junction with Highway 11 in the township of Harley, it travels northerly for 19 kilometres (12 mi) through the communities of Couttsville and Hilliardton, then travels west for 9 kilometres (5.6 mi) through the communities of Tomstown and Heaslip to another junction with Highway 11 and Highway 624 in the township of Evanturel southeast of Englehart.
Highway 570
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Secondary Highway 573, commonly referred to as Highway 573, is a secondary highway in the Canadian province of Ontario. Its total length is approximately 19.3 kilometres (12.0 mi). Its northern terminus is Highway 11, and its southern terminus is at Highway 560 in Charlton.
Secondary Highway 624, commonly referred to as Highway 624, is a secondary highway in the Canadian province of Ontario. Located within Timiskaming District, the highway spans a distance of 42 kilometres from a junction with Highway 11 and Highway 569 in the township of Evanturel to a junction with Highway 66 in Larder Lake, passing through the community of Marter about 10 kilometres (6 mi) north of the south end. Another Highway 624 existed in the 1950s and early 1960s west of Timmins, connecting Highway 616 with Foleyet; Highway 101 eventually assumed this route.
Secondary Highway 650, commonly referred to as Highway 650, is a provincially maintained highway in the Canadian province of Ontario. The highway is 7.6 kilometres (4.7 mi) in length, connecting Highway 112 in Dane with the now abandoned Adams Mine site. The route was designated in 1964, shortly after the mine opened. It is sparsely travelled, but paved throughout its length.