| Crystal Lake to Orbetello | 4,748.03 mi (7,641.21 km) |
| Crystal Lake to Oria | 5,088.17 mi (8,188.62 km) |
| Crystal Lake to Oristano | 4,749.03 mi (7,642.82 km) |
| Crystal Lake to Orta Nova | 4,975.00 mi (8,006.49 km) |
| Crystal Lake to Orte | 4,793.82 mi (7,714.91 km) |
| Crystal Lake to Ortona | 4,877.94 mi (7,850.28 km) |
| Crystal Lake to Orvieto | 4,771.71 mi (7,679.32 km) |
| Crystal Lake to Orzinuovi | 4,572.77 mi (7,359.16 km) |
| Crystal Lake to Osimo | 4,792.26 mi (7,712.40 km) |
| Crystal Lake to Ospitaletto | 4,571.77 mi (7,357.56 km) |
| Crystal Lake to Ostuni | 5,075.42 mi (8,168.11 km) |
| Crystal Lake to Ottaviano | 4,947.96 mi (7,962.97 km) |
| Crystal Lake to Ovada | 4,553.63 mi (7,328.35 km) |
| Crystal Lake to Ozieri | 4,737.31 mi (7,623.97 km) |
| Crystal Lake to Paceco | 4,997.83 mi (8,043.24 km) |
