542a
41Ontario Highway 519 — Highway 519 Route information Maintained by the Ministry of Transportation of Ontario Length: 30.5 km …
42Ontario Highway 520 — Highway 520 Route information Maintained by the Ministry of Transportation of Ontario Length: 68 km …
43Ontario Highway 522 — Highway 522 Route information Maintained by the Ministry of Transportation of Ontario Length: 109.6 km …
44Ontario Highway 522B — Highway 522B Route information Maintained by the Ministry of Transportation of Ontario Length: 1.9 km …
45Ontario Highway 523 — Highway 523 Route information Maintained by the Ministry of Transportation of Ontario Length: 20.1 km …
46Ontario Highway 524 — Highway 524 Route information Maintained by the Ministry of Transportation of Ontario Length: 4.6 km …
47Ontario Highway 525 — Highway 525 Route information Length: 35.5 km[3] (22.1 mi) …
48Ontario Highway 526 — Highway 526 Route information Length: 3.9 km[2] (2.4 mi) …
49Ontario Highway 528 — Highway 528 Route information Length: 13.5 km[2] (8.4 mi) …
50Ontario Highway 528A — Highway 528A Route information Length: 5.1 km[2] (3.2 mi) …