| Oss to Olympia Heights (Florida) | 4,670.03 mi (7,515.69 km) |
| Oss to Omaha (Nebraska) | 4,481.76 mi (7,212.70 km) |
| Oss to On Top of the World Designated Place (Florida) | 4,577.16 mi (7,366.22 km) |
| Oss to Onalaska (Wisconsin) | 4,180.59 mi (6,728.01 km) |
| Oss to Oneida (New York) | 3,642.16 mi (5,861.49 km) |
| Oss to Oneonta (New York) | 3,646.50 mi (5,868.47 km) |
| Oss to Ontario (California) | 5,584.41 mi (8,987.25 km) |
| Oss to Ontario (Oregon) | 4,983.66 mi (8,020.43 km) |
| Oss to Opa-locka (Florida) | 4,657.52 mi (7,495.55 km) |
| Oss to Opelika (Alabama) | 4,520.86 mi (7,275.63 km) |
| Oss to Opelousas (Louisiana) | 4,893.43 mi (7,875.22 km) |
| Oss to Orange (California) | 5,604.75 mi (9,019.97 km) |
| Oss to Orange (Texas) | 4,979.34 mi (8,013.47 km) |
| Oss to Orange City (Florida) | 4,545.04 mi (7,314.53 km) |
| Oss to Orangeburg (South Carolina) | 4,299.27 mi (6,919.00 km) |
