| Terracina to Olympia Heights (Florida) | 5,242.64 mi (8,437.21 km) |
| Terracina to Omaha (Nebraska) | 5,224.59 mi (8,408.17 km) |
| Terracina to On Top of the World Designated Place (Florida) | 5,187.04 mi (8,347.74 km) |
| Terracina to Onalaska (Wisconsin) | 4,919.77 mi (7,917.60 km) |
| Terracina to Oneida (New York) | 4,321.50 mi (6,954.78 km) |
| Terracina to Oneonta (New York) | 4,318.78 mi (6,950.40 km) |
| Terracina to Ontario (California) | 6,368.97 mi (10,249.87 km) |
| Terracina to Ontario (Oregon) | 5,783.65 mi (9,307.88 km) |
| Terracina to Opa-locka (Florida) | 5,230.92 mi (8,418.35 km) |
| Terracina to Opelika (Alabama) | 5,172.36 mi (8,324.11 km) |
| Terracina to Opelousas (Louisiana) | 5,566.36 mi (8,958.20 km) |
| Terracina to Orange (California) | 6,389.38 mi (10,282.71 km) |
| Terracina to Orange (Texas) | 5,658.50 mi (9,106.47 km) |
| Terracina to Orange City (Florida) | 5,147.70 mi (8,284.43 km) |
| Terracina to Orangeburg (South Carolina) | 4,932.69 mi (7,938.39 km) |
