| Barnet to Orbetello | 830.63 mi (1,336.77 km) |
| Barnet to Oria | 1,144.88 mi (1,842.51 km) |
| Barnet to Oristano | 913.51 mi (1,470.15 km) |
| Barnet to Orta Nova | 1,035.41 mi (1,666.33 km) |
| Barnet to Orte | 865.79 mi (1,393.35 km) |
| Barnet to Ortona | 937.94 mi (1,509.48 km) |
| Barnet to Orvieto | 843.10 mi (1,356.84 km) |
| Barnet to Orzinuovi | 632.32 mi (1,017.62 km) |
| Barnet to Osimo | 848.94 mi (1,366.23 km) |
| Barnet to Ospitaletto | 629.28 mi (1,012.73 km) |
| Barnet to Ostuni | 1,131.15 mi (1,820.41 km) |
| Barnet to Ottaviano | 1,020.02 mi (1,641.56 km) |
| Barnet to Ovada | 632.02 mi (1,017.13 km) |
| Barnet to Ozieri | 880.58 mi (1,417.16 km) |
| Barnet to Paceco | 1,128.41 mi (1,816.00 km) |
