| Chelm to Orbetello | 833.02 mi (1,340.62 km) |
| Chelm to Oria | 786.05 mi (1,265.03 km) |
| Chelm to Oristano | 1,054.84 mi (1,697.60 km) |
| Chelm to Orta Nova | 771.27 mi (1,241.24 km) |
| Chelm to Orte | 794.66 mi (1,278.88 km) |
| Chelm to Ortona | 742.40 mi (1,194.77 km) |
| Chelm to Orvieto | 789.23 mi (1,270.15 km) |
| Chelm to Orzinuovi | 736.47 mi (1,185.23 km) |
| Chelm to Osimo | 704.82 mi (1,134.30 km) |
| Chelm to Ospitaletto | 724.58 mi (1,166.10 km) |
| Chelm to Ostuni | 771.69 mi (1,241.91 km) |
| Chelm to Ottaviano | 830.10 mi (1,335.92 km) |
| Chelm to Ovada | 818.36 mi (1,317.02 km) |
| Chelm to Ozieri | 1,004.54 mi (1,616.65 km) |
| Chelm to Paceco | 1,053.28 mi (1,695.09 km) |
