| Brownsburg to Orbetello | 4,771.75 mi (7,679.39 km) |
| Brownsburg to Oria | 5,117.23 mi (8,235.39 km) |
| Brownsburg to Oristano | 4,761.12 mi (7,662.28 km) |
| Brownsburg to Orta Nova | 5,003.01 mi (8,051.56 km) |
| Brownsburg to Orte | 4,819.49 mi (7,756.22 km) |
| Brownsburg to Ortona | 4,906.57 mi (7,896.36 km) |
| Brownsburg to Orvieto | 4,797.67 mi (7,721.11 km) |
| Brownsburg to Orzinuovi | 4,603.22 mi (7,408.16 km) |
| Brownsburg to Osimo | 4,822.59 mi (7,761.21 km) |
| Brownsburg to Ospitaletto | 4,602.89 mi (7,407.64 km) |
| Brownsburg to Ostuni | 5,105.01 mi (8,215.73 km) |
| Brownsburg to Ottaviano | 4,972.57 mi (8,002.57 km) |
| Brownsburg to Ovada | 4,579.87 mi (7,370.59 km) |
| Brownsburg to Ozieri | 4,752.07 mi (7,647.72 km) |
| Brownsburg to Paceco | 5,011.21 mi (8,064.76 km) |
