| Oxon Hill to Olympia (Washington) | 2,356.76 mi (3,792.84 km) |
| Oxon Hill to Olympia Heights (Florida) | 923.64 mi (1,486.46 km) |
| Oxon Hill to Omaha (Nebraska) | 1,021.73 mi (1,644.31 km) |
| Oxon Hill to On Top of the World Designated Place (Florida) | 734.70 mi (1,182.39 km) |
| Oxon Hill to Onalaska (Wisconsin) | 816.74 mi (1,314.41 km) |
| Oxon Hill to Oneida (New York) | 304.09 mi (489.38 km) |
| Oxon Hill to Oneonta (New York) | 272.33 mi (438.28 km) |
| Oxon Hill to Ontario (California) | 2,264.33 mi (3,644.08 km) |
| Oxon Hill to Ontario (Oregon) | 2,083.41 mi (3,352.92 km) |
| Oxon Hill to Opa-locka (Florida) | 910.71 mi (1,465.65 km) |
| Oxon Hill to Opelika (Alabama) | 633.07 mi (1,018.82 km) |
| Oxon Hill to Opelousas (Louisiana) | 1,029.00 mi (1,656.01 km) |
| Oxon Hill to Orange (California) | 2,281.59 mi (3,671.87 km) |
| Oxon Hill to Orange (Texas) | 1,125.60 mi (1,811.47 km) |
| Oxon Hill to Orange City (Florida) | 724.19 mi (1,165.47 km) |
