| Cheltenham to Orbetello | 900.79 mi (1,449.68 km) |
| Cheltenham to Oria | 1,221.03 mi (1,965.05 km) |
| Cheltenham to Oristano | 972.09 mi (1,564.43 km) |
| Cheltenham to Orta Nova | 1,110.56 mi (1,787.28 km) |
| Cheltenham to Orte | 938.12 mi (1,509.76 km) |
| Cheltenham to Ortona | 1,013.02 mi (1,630.30 km) |
| Cheltenham to Orvieto | 915.47 mi (1,473.30 km) |
| Cheltenham to Orzinuovi | 706.79 mi (1,137.47 km) |
| Cheltenham to Osimo | 924.72 mi (1,488.19 km) |
| Cheltenham to Ospitaletto | 704.37 mi (1,133.57 km) |
| Cheltenham to Ostuni | 1,207.52 mi (1,943.32 km) |
| Cheltenham to Ottaviano | 1,092.85 mi (1,758.77 km) |
| Cheltenham to Ovada | 701.77 mi (1,129.39 km) |
| Cheltenham to Ozieri | 941.64 mi (1,515.42 km) |
| Cheltenham to Paceco | 1,193.38 mi (1,920.55 km) |
