| Bloomington to Orbetello | 4,850.13 mi (7,805.52 km) |
| Bloomington to Oria | 5,192.36 mi (8,356.30 km) |
| Bloomington to Oristano | 4,846.54 mi (7,799.76 km) |
| Bloomington to Orta Nova | 5,078.77 mi (8,173.49 km) |
| Bloomington to Orte | 4,896.67 mi (7,880.42 km) |
| Bloomington to Ortona | 4,981.91 mi (8,017.61 km) |
| Bloomington to Orvieto | 4,874.66 mi (7,845.01 km) |
| Bloomington to Orzinuovi | 4,677.31 mi (7,527.40 km) |
| Bloomington to Osimo | 4,896.83 mi (7,880.69 km) |
| Bloomington to Ospitaletto | 4,676.56 mi (7,526.19 km) |
| Bloomington to Ostuni | 5,179.81 mi (8,336.10 km) |
| Bloomington to Ottaviano | 5,050.45 mi (8,127.92 km) |
| Bloomington to Ovada | 4,656.61 mi (7,494.09 km) |
| Bloomington to Ozieri | 4,835.91 mi (7,782.64 km) |
| Bloomington to Paceco | 5,095.95 mi (8,201.14 km) |
