| Salsomaggiore Terme to Oakley (California) | 5,972.24 mi (9,611.39 km) |
| Salsomaggiore Terme to Oakton (Virginia) | 4,287.32 mi (6,899.78 km) |
| Salsomaggiore Terme to Oakville (Missouri) | 4,849.57 mi (7,804.62 km) |
| Salsomaggiore Terme to Oatfield (Oregon) | 5,562.01 mi (8,951.19 km) |
| Salsomaggiore Terme to Ocala (Florida) | 4,926.46 mi (7,928.37 km) |
| Salsomaggiore Terme to Ocean Acres (New Jersey) | 4,121.90 mi (6,633.56 km) |
| Salsomaggiore Terme to Ocean City (New Jersey) | 4,154.85 mi (6,686.59 km) |
| Salsomaggiore Terme to Ocean Pines (Maryland) | 4,214.39 mi (6,782.41 km) |
| Salsomaggiore Terme to Ocean Pointe (Hawaii) | 7,805.49 mi (12,561.72 km) |
| Salsomaggiore Terme to Ocean Springs (Mississippi) | 5,162.75 mi (8,308.64 km) |
| Salsomaggiore Terme to Oceanside (California) | 6,112.77 mi (9,837.56 km) |
| Salsomaggiore Terme to Oceanside (New York) | 4,058.91 mi (6,532.18 km) |
| Salsomaggiore Terme to Ocoee (Florida) | 4,925.89 mi (7,927.45 km) |
| Salsomaggiore Terme to Oconomowoc (Wisconsin) | 4,566.61 mi (7,349.25 km) |
| Salsomaggiore Terme to Odenton (Maryland) | 4,253.79 mi (6,845.81 km) |
