| Karlskoga to Octeville | 928.33 mi (1,494.00 km) |
| Karlskoga to Oignies | 762.39 mi (1,226.94 km) |
| Karlskoga to Oissel | 873.55 mi (1,405.84 km) |
| Karlskoga to Olivet | 942.89 mi (1,517.44 km) |
| Karlskoga to Ollioules | 1,177.75 mi (1,895.41 km) |
| Karlskoga to Olonne-sur-Mer | 1,108.16 mi (1,783.41 km) |
| Karlskoga to Oloron-Sainte-Marie | 1,285.84 mi (2,069.36 km) |
| Karlskoga to Onet Village | 1,148.58 mi (1,848.45 km) |
| Karlskoga to Onnaing | 753.30 mi (1,212.33 km) |
| Karlskoga to Orange | 1,126.31 mi (1,812.63 km) |
| Karlskoga to Orchies | 756.24 mi (1,217.05 km) |
| Karlskoga to Orleans | 940.36 mi (1,513.36 km) |
| Karlskoga to Orly | 878.69 mi (1,414.11 km) |
| Karlskoga to Ormesson-sur-Marne | 872.94 mi (1,404.86 km) |
| Karlskoga to Orsay | 886.02 mi (1,425.92 km) |
