| Rocky River to Olympia (Washington) | 2,042.95 mi (3,287.81 km) |
| Rocky River to Olympia Heights (Florida) | 1,091.39 mi (1,756.42 km) |
| Rocky River to Omaha (Nebraska) | 735.67 mi (1,183.94 km) |
| Rocky River to On Top of the World Designated Place (Florida) | 854.64 mi (1,375.42 km) |
| Rocky River to Onalaska (Wisconsin) | 503.35 mi (810.07 km) |
| Rocky River to Oneida (New York) | 335.28 mi (539.59 km) |
| Rocky River to Oneonta (New York) | 355.11 mi (571.50 km) |
| Rocky River to Ontario (California) | 2,004.02 mi (3,225.16 km) |
| Rocky River to Ontario (Oregon) | 1,777.28 mi (2,860.26 km) |
| Rocky River to Opa-locka (Florida) | 1,079.67 mi (1,737.57 km) |
| Rocky River to Opelika (Alabama) | 638.75 mi (1,027.96 km) |
| Rocky River to Opelousas (Louisiana) | 946.55 mi (1,523.33 km) |
| Rocky River to Orange (California) | 2,022.19 mi (3,254.41 km) |
| Rocky River to Orange (Texas) | 1,027.52 mi (1,653.64 km) |
| Rocky River to Orange City (Florida) | 866.69 mi (1,394.81 km) |
