| Colonial Heights to Orbetello | 4,490.04 mi (7,226.02 km) |
| Colonial Heights to Oria | 4,844.28 mi (7,796.11 km) |
| Colonial Heights to Oristano | 4,453.70 mi (7,167.53 km) |
| Colonial Heights to Orta Nova | 4,728.76 mi (7,610.20 km) |
| Colonial Heights to Orte | 4,541.73 mi (7,309.20 km) |
| Colonial Heights to Ortona | 4,634.72 mi (7,458.87 km) |
| Colonial Heights to Orvieto | 4,520.80 mi (7,275.53 km) |
| Colonial Heights to Orzinuovi | 4,338.77 mi (6,982.58 km) |
| Colonial Heights to Osimo | 4,555.54 mi (7,331.44 km) |
| Colonial Heights to Ospitaletto | 4,340.02 mi (6,984.59 km) |
| Colonial Heights to Ostuni | 4,833.41 mi (7,778.62 km) |
| Colonial Heights to Ottaviano | 4,690.87 mi (7,549.22 km) |
| Colonial Heights to Ovada | 4,305.93 mi (6,929.73 km) |
| Colonial Heights to Ozieri | 4,450.54 mi (7,162.46 km) |
| Colonial Heights to Paceco | 4,704.23 mi (7,570.73 km) |
