| Hrastnik to Octeville | 812.48 mi (1,307.57 km) |
| Hrastnik to Oignies | 632.47 mi (1,017.86 km) |
| Hrastnik to Oissel | 688.34 mi (1,107.78 km) |
| Hrastnik to Olivet | 634.72 mi (1,021.48 km) |
| Hrastnik to Ollioules | 502.07 mi (808.00 km) |
| Hrastnik to Olonne-sur-Mer | 806.23 mi (1,297.50 km) |
| Hrastnik to Oloron-Sainte-Marie | 799.30 mi (1,286.35 km) |
| Hrastnik to Onet Village | 622.43 mi (1,001.70 km) |
| Hrastnik to Onnaing | 605.87 mi (975.06 km) |
| Hrastnik to Orange | 522.40 mi (840.73 km) |
| Hrastnik to Orchies | 622.54 mi (1,001.88 km) |
| Hrastnik to Orleans | 634.61 mi (1,021.30 km) |
| Hrastnik to Orly | 621.77 mi (1,000.63 km) |
| Hrastnik to Ormesson-sur-Marne | 615.90 mi (991.20 km) |
| Hrastnik to Orsay | 630.29 mi (1,014.35 km) |
