| Annapolis Neck to Olympia Heights (Florida) | 940.04 mi (1,512.84 km) |
| Annapolis Neck to Omaha (Nebraska) | 1,043.47 mi (1,679.30 km) |
| Annapolis Neck to On Top of the World Designated Place (Florida) | 755.59 mi (1,216.01 km) |
| Annapolis Neck to Onalaska (Wisconsin) | 833.69 mi (1,341.70 km) |
| Annapolis Neck to Oneida (New York) | 289.08 mi (465.23 km) |
| Annapolis Neck to Oneonta (New York) | 254.14 mi (408.99 km) |
| Annapolis Neck to Ontario (California) | 2,288.87 mi (3,683.58 km) |
| Annapolis Neck to Ontario (Oregon) | 2,102.73 mi (3,384.02 km) |
| Annapolis Neck to Opa-locka (Florida) | 927.05 mi (1,491.94 km) |
| Annapolis Neck to Opelika (Alabama) | 659.49 mi (1,061.34 km) |
| Annapolis Neck to Opelousas (Louisiana) | 1,056.37 mi (1,700.06 km) |
| Annapolis Neck to Orange (California) | 2,306.20 mi (3,711.47 km) |
| Annapolis Neck to Orange (Texas) | 1,153.06 mi (1,855.67 km) |
| Annapolis Neck to Orange City (Florida) | 743.54 mi (1,196.61 km) |
| Annapolis Neck to Orangeburg (South Carolina) | 448.15 mi (721.23 km) |
