| Ferentino to Oakley (California) | 6,243.83 mi (10,048.48 km) |
| Ferentino to Oakton (Virginia) | 4,537.73 mi (7,302.78 km) |
| Ferentino to Oakville (Missouri) | 5,110.29 mi (8,224.23 km) |
| Ferentino to Oatfield (Oregon) | 5,831.92 mi (9,385.58 km) |
| Ferentino to Ocala (Florida) | 5,165.54 mi (8,313.13 km) |
| Ferentino to Ocean Acres (New Jersey) | 4,370.96 mi (7,034.38 km) |
| Ferentino to Ocean City (New Jersey) | 4,403.36 mi (7,086.53 km) |
| Ferentino to Ocean Pines (Maryland) | 4,461.85 mi (7,180.66 km) |
| Ferentino to Ocean Pointe (Hawaii) | 8,048.41 mi (12,952.66 km) |
| Ferentino to Ocean Springs (Mississippi) | 5,412.02 mi (8,709.81 km) |
| Ferentino to Oceanside (California) | 6,384.11 mi (10,274.23 km) |
| Ferentino to Oceanside (New York) | 4,308.96 mi (6,934.60 km) |
| Ferentino to Ocoee (Florida) | 5,163.04 mi (8,309.11 km) |
| Ferentino to Oconomowoc (Wisconsin) | 4,830.79 mi (7,774.41 km) |
| Ferentino to Odenton (Maryland) | 4,503.93 mi (7,248.37 km) |
