| Casas Adobes to Octeville | 5,315.63 mi (8,554.68 km) |
| Casas Adobes to Oignies | 5,446.09 mi (8,764.64 km) |
| Casas Adobes to Oissel | 5,426.46 mi (8,733.04 km) |
| Casas Adobes to Olivet | 5,517.83 mi (8,880.10 km) |
| Casas Adobes to Ollioules | 5,872.43 mi (9,450.76 km) |
| Casas Adobes to Olonne-sur-Mer | 5,434.24 mi (8,745.56 km) |
| Casas Adobes to Oloron-Sainte-Marie | 5,616.60 mi (9,039.05 km) |
| Casas Adobes to Onet Village | 5,693.43 mi (9,162.70 km) |
| Casas Adobes to Onnaing | 5,470.45 mi (8,803.84 km) |
| Casas Adobes to Orange | 5,788.18 mi (9,315.18 km) |
| Casas Adobes to Orchies | 5,454.52 mi (8,778.20 km) |
| Casas Adobes to Orleans | 5,516.51 mi (8,877.96 km) |
| Casas Adobes to Orly | 5,498.37 mi (8,848.78 km) |
| Casas Adobes to Ormesson-sur-Marne | 5,501.81 mi (8,854.31 km) |
| Casas Adobes to Orsay | 5,492.93 mi (8,840.02 km) |
