| Bollnas to Orbetello | 1,324.02 mi (2,130.80 km) |
| Bollnas to Oria | 1,441.41 mi (2,319.73 km) |
| Bollnas to Oristano | 1,517.97 mi (2,442.94 km) |
| Bollnas to Orta Nova | 1,383.36 mi (2,226.30 km) |
| Bollnas to Orte | 1,315.56 mi (2,117.19 km) |
| Bollnas to Ortona | 1,315.25 mi (2,116.69 km) |
| Bollnas to Orvieto | 1,299.34 mi (2,091.08 km) |
| Bollnas to Orzinuovi | 1,132.31 mi (1,822.28 km) |
| Bollnas to Osimo | 1,240.12 mi (1,995.78 km) |
| Bollnas to Ospitaletto | 1,120.49 mi (1,803.25 km) |
| Bollnas to Ostuni | 1,425.22 mi (2,293.68 km) |
| Bollnas to Ottaviano | 1,418.57 mi (2,282.98 km) |
| Bollnas to Ovada | 1,196.62 mi (1,925.77 km) |
| Bollnas to Ozieri | 1,468.02 mi (2,362.54 km) |
| Bollnas to Paceco | 1,622.82 mi (2,611.68 km) |
