| Uslar to Olympia Heights (Florida) | 4,842.18 mi (7,792.73 km) |
| Uslar to Omaha (Nebraska) | 4,627.28 mi (7,446.88 km) |
| Uslar to On Top of the World Designated Place (Florida) | 4,746.33 mi (7,638.48 km) |
| Uslar to Onalaska (Wisconsin) | 4,327.72 mi (6,964.79 km) |
| Uslar to Oneida (New York) | 3,803.73 mi (6,121.51 km) |
| Uslar to Oneonta (New York) | 3,809.21 mi (6,130.33 km) |
| Uslar to Ontario (California) | 5,710.47 mi (9,190.11 km) |
| Uslar to Ontario (Oregon) | 5,098.66 mi (8,205.51 km) |
| Uslar to Opa-locka (Florida) | 4,829.62 mi (7,772.52 km) |
| Uslar to Opelika (Alabama) | 4,685.33 mi (7,540.30 km) |
| Uslar to Opelousas (Louisiana) | 5,054.20 mi (8,133.95 km) |
| Uslar to Orange (California) | 5,730.72 mi (9,222.71 km) |
| Uslar to Orange (Texas) | 5,138.94 mi (8,270.33 km) |
| Uslar to Orange City (Florida) | 4,714.92 mi (7,587.93 km) |
| Uslar to Orangeburg (South Carolina) | 4,466.28 mi (7,187.79 km) |
