| Ajdovscina to Olympia Heights (Florida) | 5,155.98 mi (8,297.74 km) |
| Ajdovscina to Omaha (Nebraska) | 5,033.49 mi (8,100.63 km) |
| Ajdovscina to On Top of the World Designated Place (Florida) | 5,080.13 mi (8,175.67 km) |
| Ajdovscina to Onalaska (Wisconsin) | 4,731.21 mi (7,614.15 km) |
| Ajdovscina to Oneida (New York) | 4,172.29 mi (6,714.66 km) |
| Ajdovscina to Oneonta (New York) | 4,173.86 mi (6,717.17 km) |
| Ajdovscina to Ontario (California) | 6,140.98 mi (9,882.96 km) |
| Ajdovscina to Ontario (Oregon) | 5,536.65 mi (8,910.38 km) |
| Ajdovscina to Opa-locka (Florida) | 5,143.81 mi (8,278.15 km) |
| Ajdovscina to Opelika (Alabama) | 5,041.65 mi (8,113.76 km) |
| Ajdovscina to Opelousas (Louisiana) | 5,423.39 mi (8,728.11 km) |
| Ajdovscina to Orange (California) | 6,161.30 mi (9,915.66 km) |
| Ajdovscina to Orange (Texas) | 5,511.77 mi (8,870.33 km) |
| Ajdovscina to Orange City (Florida) | 5,044.65 mi (8,118.58 km) |
| Ajdovscina to Orangeburg (South Carolina) | 4,811.94 mi (7,744.07 km) |
