| Herceg Novi to Olympia Heights (Florida) | 5,459.72 mi (8,786.57 km) |
| Herceg Novi to Omaha (Nebraska) | 5,362.91 mi (8,630.77 km) |
| Herceg Novi to On Top of the World Designated Place (Florida) | 5,391.61 mi (8,676.96 km) |
| Herceg Novi to Onalaska (Wisconsin) | 5,060.46 mi (8,144.02 km) |
| Herceg Novi to Oneida (New York) | 4,495.55 mi (7,234.88 km) |
| Herceg Novi to Oneonta (New York) | 4,496.11 mi (7,235.79 km) |
| Herceg Novi to Ontario (California) | 6,467.95 mi (10,409.16 km) |
| Herceg Novi to Ontario (Oregon) | 5,858.99 mi (9,429.13 km) |
| Herceg Novi to Opa-locka (Florida) | 5,447.73 mi (8,767.27 km) |
| Herceg Novi to Opelika (Alabama) | 5,360.72 mi (8,627.24 km) |
| Herceg Novi to Opelousas (Louisiana) | 5,745.86 mi (9,247.06 km) |
| Herceg Novi to Orange (California) | 6,488.25 mi (10,441.83 km) |
| Herceg Novi to Orange (Texas) | 5,835.14 mi (9,390.75 km) |
| Herceg Novi to Orange City (Florida) | 5,354.71 mi (8,617.58 km) |
| Herceg Novi to Orangeburg (South Carolina) | 5,127.88 mi (8,252.52 km) |
