| Bolingbrook to Orbetello | 4,762.13 mi (7,663.91 km) |
| Bolingbrook to Oria | 5,103.36 mi (8,213.06 km) |
| Bolingbrook to Oristano | 4,760.90 mi (7,661.92 km) |
| Bolingbrook to Orta Nova | 4,989.96 mi (8,030.57 km) |
| Bolingbrook to Orte | 4,808.30 mi (7,738.22 km) |
| Bolingbrook to Ortona | 4,893.00 mi (7,874.52 km) |
| Bolingbrook to Orvieto | 4,786.24 mi (7,702.72 km) |
| Bolingbrook to Orzinuovi | 4,588.11 mi (7,383.86 km) |
| Bolingbrook to Osimo | 4,807.63 mi (7,737.13 km) |
| Bolingbrook to Ospitaletto | 4,587.25 mi (7,382.46 km) |
| Bolingbrook to Ostuni | 5,090.71 mi (8,192.70 km) |
| Bolingbrook to Ottaviano | 4,962.27 mi (7,986.00 km) |
| Bolingbrook to Ovada | 4,568.17 mi (7,351.76 km) |
| Bolingbrook to Ozieri | 4,749.70 mi (7,643.90 km) |
| Bolingbrook to Paceco | 5,010.00 mi (8,062.82 km) |
