| Karhula to Oignies | 1,155.37 mi (1,859.39 km) |
| Karhula to Oissel | 1,270.12 mi (2,044.06 km) |
| Karhula to Olivet | 1,322.72 mi (2,128.72 km) |
| Karhula to Ollioules | 1,486.65 mi (2,392.53 km) |
| Karhula to Olonne-sur-Mer | 1,503.26 mi (2,419.27 km) |
| Karhula to Oloron-Sainte-Marie | 1,653.95 mi (2,661.78 km) |
| Karhula to Onet Village | 1,497.98 mi (2,410.77 km) |
| Karhula to Onnaing | 1,141.08 mi (1,836.40 km) |
| Karhula to Orange | 1,452.79 mi (2,338.04 km) |
| Karhula to Orchies | 1,147.46 mi (1,846.66 km) |
| Karhula to Orleans | 1,320.42 mi (2,125.00 km) |
| Karhula to Orly | 1,261.63 mi (2,030.40 km) |
| Karhula to Ormesson-sur-Marne | 1,255.12 mi (2,019.91 km) |
| Karhula to Orsay | 1,270.14 mi (2,044.09 km) |
| Karhula to Orthez | 1,641.85 mi (2,642.30 km) |
