| Celje to Olympia Heights (Florida) | 5,207.54 mi (8,380.72 km) |
| Celje to Omaha (Nebraska) | 5,064.98 mi (8,151.30 km) |
| Celje to On Top of the World Designated Place (Florida) | 5,128.52 mi (8,253.56 km) |
| Celje to Onalaska (Wisconsin) | 4,763.52 mi (7,666.15 km) |
| Celje to Oneida (New York) | 4,213.63 mi (6,781.18 km) |
| Celje to Oneonta (New York) | 4,216.03 mi (6,785.05 km) |
| Celje to Ontario (California) | 6,161.88 mi (9,916.59 km) |
| Celje to Ontario (Oregon) | 5,551.94 mi (8,934.99 km) |
| Celje to Opa-locka (Florida) | 5,195.31 mi (8,361.04 km) |
| Celje to Opelika (Alabama) | 5,085.92 mi (8,184.99 km) |
| Celje to Opelousas (Louisiana) | 5,465.09 mi (8,795.21 km) |
| Celje to Orange (California) | 6,182.16 mi (9,949.23 km) |
| Celje to Orange (Texas) | 5,552.67 mi (8,936.16 km) |
| Celje to Orange City (Florida) | 5,093.71 mi (8,197.53 km) |
| Celje to Orangeburg (South Carolina) | 4,858.14 mi (7,818.42 km) |
