| Karcag to Octeville | 1,041.71 mi (1,676.47 km) |
| Karcag to Oignies | 840.62 mi (1,352.84 km) |
| Karcag to Oissel | 918.73 mi (1,478.56 km) |
| Karcag to Olivet | 884.72 mi (1,423.82 km) |
| Karcag to Ollioules | 786.33 mi (1,265.48 km) |
| Karcag to Olonne-sur-Mer | 1,068.21 mi (1,719.12 km) |
| Karcag to Oloron-Sainte-Marie | 1,080.94 mi (1,739.60 km) |
| Karcag to Onet Village | 902.86 mi (1,453.02 km) |
| Karcag to Onnaing | 813.48 mi (1,309.17 km) |
| Karcag to Orange | 805.56 mi (1,296.42 km) |
| Karcag to Orchies | 829.77 mi (1,335.38 km) |
| Karcag to Orleans | 884.12 mi (1,422.86 km) |
| Karcag to Orly | 859.47 mi (1,383.18 km) |
| Karcag to Ormesson-sur-Marne | 852.83 mi (1,372.50 km) |
| Karcag to Orsay | 868.86 mi (1,398.29 km) |
