| Rocky Mount to Olympia (Washington) | 2,417.83 mi (3,891.12 km) |
| Rocky Mount to Olympia Heights (Florida) | 723.53 mi (1,164.42 km) |
| Rocky Mount to Omaha (Nebraska) | 1,048.41 mi (1,687.26 km) |
| Rocky Mount to On Top of the World Designated Place (Florida) | 541.13 mi (870.86 km) |
| Rocky Mount to Onalaska (Wisconsin) | 894.61 mi (1,439.74 km) |
| Rocky Mount to Oneida (New York) | 504.18 mi (811.40 km) |
| Rocky Mount to Oneonta (New York) | 471.46 mi (758.74 km) |
| Rocky Mount to Ontario (California) | 2,240.96 mi (3,606.47 km) |
| Rocky Mount to Ontario (Oregon) | 2,125.13 mi (3,420.07 km) |
| Rocky Mount to Opa-locka (Florida) | 710.61 mi (1,143.62 km) |
| Rocky Mount to Opelika (Alabama) | 488.65 mi (786.40 km) |
| Rocky Mount to Opelousas (Louisiana) | 905.46 mi (1,457.20 km) |
| Rocky Mount to Orange (California) | 2,257.14 mi (3,632.51 km) |
| Rocky Mount to Orange (Texas) | 1,006.92 mi (1,620.47 km) |
| Rocky Mount to Orange City (Florida) | 526.62 mi (847.51 km) |
