| Cassa de la Selva to Oakley (California) | 5,908.81 mi (9,509.31 km) |
| Cassa de la Selva to Oakton (Virginia) | 4,062.57 mi (6,538.07 km) |
| Cassa de la Selva to Oakville (Missouri) | 4,663.78 mi (7,505.62 km) |
| Cassa de la Selva to Oatfield (Oregon) | 5,532.95 mi (8,904.43 km) |
| Cassa de la Selva to Ocala (Florida) | 4,667.24 mi (7,511.20 km) |
| Cassa de la Selva to Ocean Acres (New Jersey) | 3,893.28 mi (6,265.63 km) |
| Cassa de la Selva to Ocean City (New Jersey) | 3,924.36 mi (6,315.65 km) |
| Cassa de la Selva to Ocean Pines (Maryland) | 3,980.39 mi (6,405.82 km) |
| Cassa de la Selva to Ocean Pointe (Hawaii) | 7,902.31 mi (12,717.53 km) |
| Cassa de la Selva to Ocean Springs (Mississippi) | 4,931.61 mi (7,936.65 km) |
| Cassa de la Selva to Oceanside (California) | 6,009.44 mi (9,671.27 km) |
| Cassa de la Selva to Oceanside (New York) | 3,833.79 mi (6,169.89 km) |
| Cassa de la Selva to Ocoee (Florida) | 4,661.93 mi (7,502.65 km) |
| Cassa de la Selva to Oconomowoc (Wisconsin) | 4,400.55 mi (7,082.00 km) |
| Cassa de la Selva to Odenton (Maryland) | 4,028.25 mi (6,482.84 km) |
