| Trebnje to Olympia Heights (Florida) | 5,204.47 mi (8,375.79 km) |
| Trebnje to Omaha (Nebraska) | 5,071.23 mi (8,161.36 km) |
| Trebnje to On Top of the World Designated Place (Florida) | 5,127.13 mi (8,251.32 km) |
| Trebnje to Onalaska (Wisconsin) | 4,769.43 mi (7,675.66 km) |
| Trebnje to Oneida (New York) | 4,215.63 mi (6,784.41 km) |
| Trebnje to Oneonta (New York) | 4,217.65 mi (6,787.65 km) |
| Trebnje to Ontario (California) | 6,172.17 mi (9,933.14 km) |
| Trebnje to Ontario (Oregon) | 5,564.14 mi (8,954.62 km) |
| Trebnje to Opa-locka (Florida) | 5,192.27 mi (8,356.16 km) |
| Trebnje to Opelika (Alabama) | 5,086.58 mi (8,186.05 km) |
| Trebnje to Opelousas (Louisiana) | 5,466.97 mi (8,798.23 km) |
| Trebnje to Orange (California) | 6,192.47 mi (9,965.81 km) |
| Trebnje to Orange (Texas) | 5,554.91 mi (8,939.77 km) |
| Trebnje to Orange City (Florida) | 5,091.98 mi (8,194.74 km) |
| Trebnje to Orangeburg (South Carolina) | 4,857.85 mi (7,817.96 km) |
