| Modra to Octeville | 861.77 mi (1,386.88 km) |
| Modra to Oignies | 659.27 mi (1,060.99 km) |
| Modra to Oissel | 739.39 mi (1,189.93 km) |
| Modra to Olivet | 710.55 mi (1,143.52 km) |
| Modra to Ollioules | 657.91 mi (1,058.81 km) |
| Modra to Olonne-sur-Mer | 898.03 mi (1,445.24 km) |
| Modra to Oloron-Sainte-Marie | 930.87 mi (1,498.10 km) |
| Modra to Onet Village | 751.91 mi (1,210.09 km) |
| Modra to Onnaing | 632.15 mi (1,017.35 km) |
| Modra to Orange | 662.85 mi (1,066.75 km) |
| Modra to Orchies | 648.39 mi (1,043.49 km) |
| Modra to Orleans | 709.78 mi (1,142.28 km) |
| Modra to Orly | 681.89 mi (1,097.40 km) |
| Modra to Ormesson-sur-Marne | 675.12 mi (1,086.50 km) |
| Modra to Orsay | 691.42 mi (1,112.74 km) |
