| Columbia Heights to Orbetello | 4,813.96 mi (7,747.31 km) |
| Columbia Heights to Oria | 5,143.76 mi (8,278.09 km) |
| Columbia Heights to Oristano | 4,833.15 mi (7,778.20 km) |
| Columbia Heights to Orta Nova | 5,032.88 mi (8,099.63 km) |
| Columbia Heights to Orte | 4,856.41 mi (7,815.64 km) |
| Columbia Heights to Ortona | 4,935.35 mi (7,942.67 km) |
| Columbia Heights to Orvieto | 4,833.96 mi (7,779.50 km) |
| Columbia Heights to Orzinuovi | 4,629.01 mi (7,449.67 km) |
| Columbia Heights to Osimo | 4,847.43 mi (7,801.18 km) |
| Columbia Heights to Ospitaletto | 4,626.94 mi (7,446.34 km) |
| Columbia Heights to Ostuni | 5,130.23 mi (8,256.31 km) |
| Columbia Heights to Ottaviano | 5,011.39 mi (8,065.05 km) |
| Columbia Heights to Ovada | 4,616.67 mi (7,429.81 km) |
| Columbia Heights to Ozieri | 4,817.37 mi (7,752.81 km) |
| Columbia Heights to Paceco | 5,078.64 mi (8,173.28 km) |
