| Champaign to Octeville | 4,053.64 mi (6,523.70 km) |
| Champaign to Oignies | 4,208.48 mi (6,772.89 km) |
| Champaign to Oissel | 4,171.58 mi (6,713.52 km) |
| Champaign to Olivet | 4,253.41 mi (6,845.21 km) |
| Champaign to Ollioules | 4,587.29 mi (7,382.52 km) |
| Champaign to Olonne-sur-Mer | 4,146.72 mi (6,673.49 km) |
| Champaign to Oloron-Sainte-Marie | 4,309.57 mi (6,935.58 km) |
| Champaign to Onet Village | 4,404.87 mi (7,088.95 km) |
| Champaign to Onnaing | 4,234.45 mi (6,814.69 km) |
| Champaign to Orange | 4,506.10 mi (7,251.87 km) |
| Champaign to Orchies | 4,217.93 mi (6,788.10 km) |
| Champaign to Orleans | 4,252.44 mi (6,843.63 km) |
| Champaign to Orly | 4,243.15 mi (6,828.70 km) |
| Champaign to Ormesson-sur-Marne | 4,247.50 mi (6,835.69 km) |
| Champaign to Orsay | 4,236.55 mi (6,818.07 km) |
