| Kopavogur to Oria | 2,268.17 mi (3,650.27 km) |
| Kopavogur to Oristano | 2,075.09 mi (3,339.54 km) |
| Kopavogur to Orta Nova | 2,167.46 mi (3,488.18 km) |
| Kopavogur to Orte | 2,013.25 mi (3,240.02 km) |
| Kopavogur to Ortona | 2,072.34 mi (3,335.11 km) |
| Kopavogur to Orvieto | 1,990.78 mi (3,203.85 km) |
| Kopavogur to Orzinuovi | 1,776.32 mi (2,858.71 km) |
| Kopavogur to Osimo | 1,981.34 mi (3,188.66 km) |
| Kopavogur to Ospitaletto | 1,770.85 mi (2,849.91 km) |
| Kopavogur to Ostuni | 2,253.00 mi (3,625.85 km) |
| Kopavogur to Ottaviano | 2,163.66 mi (3,482.08 km) |
| Kopavogur to Ovada | 1,788.56 mi (2,878.41 km) |
| Kopavogur to Ozieri | 2,042.90 mi (3,287.73 km) |
| Kopavogur to Paceco | 2,289.10 mi (3,683.95 km) |
| Kopavogur to Pachino | 2,430.68 mi (3,911.80 km) |
