| North Royalton to Oswego (Illinois) | 342.01 mi (550.41 km) |
| North Royalton to Oswego (New York) | 305.63 mi (491.86 km) |
| North Royalton to Otsego (Minnesota) | 655.84 mi (1,055.48 km) |
| North Royalton to Ottawa (Illinois) | 367.27 mi (591.07 km) |
| North Royalton to Ottawa (Kansas) | 739.26 mi (1,189.72 km) |
| North Royalton to Ottumwa (Iowa) | 555.19 mi (893.49 km) |
| North Royalton to Overland (Missouri) | 490.65 mi (789.63 km) |
| North Royalton to Overland Park (Kansas) | 703.50 mi (1,132.18 km) |
| North Royalton to Overlea (Maryland) | 306.42 mi (493.14 km) |
| North Royalton to Oviedo (Florida) | 875.00 mi (1,408.17 km) |
| North Royalton to Owasso (Oklahoma) | 832.87 mi (1,340.37 km) |
| North Royalton to Owatonna (Minnesota) | 613.36 mi (987.10 km) |
| North Royalton to Owensboro (Kentucky) | 377.12 mi (606.92 km) |
| North Royalton to Owings Mills (Maryland) | 291.98 mi (469.89 km) |
| North Royalton to Owosso (Michigan) | 170.30 mi (274.07 km) |
