| Klazienaveen to Orbetello | 737.71 mi (1,187.23 km) |
| Klazienaveen to Oria | 982.48 mi (1,581.14 km) |
| Klazienaveen to Oristano | 889.55 mi (1,431.59 km) |
| Klazienaveen to Orta Nova | 887.11 mi (1,427.67 km) |
| Klazienaveen to Orte | 752.58 mi (1,211.15 km) |
| Klazienaveen to Ortona | 795.46 mi (1,280.17 km) |
| Klazienaveen to Orvieto | 731.38 mi (1,177.04 km) |
| Klazienaveen to Orzinuovi | 523.87 mi (843.08 km) |
| Klazienaveen to Osimo | 705.28 mi (1,135.03 km) |
| Klazienaveen to Ospitaletto | 515.11 mi (829.00 km) |
| Klazienaveen to Ostuni | 966.95 mi (1,556.15 km) |
| Klazienaveen to Ottaviano | 893.16 mi (1,437.40 km) |
| Klazienaveen to Ovada | 564.33 mi (908.20 km) |
| Klazienaveen to Ozieri | 844.73 mi (1,359.46 km) |
| Klazienaveen to Paceco | 1,053.56 mi (1,695.53 km) |
