| Gallup to Octeville | 5,063.66 mi (8,149.17 km) |
| Gallup to Oignies | 5,192.62 mi (8,356.72 km) |
| Gallup to Oissel | 5,173.93 mi (8,326.64 km) |
| Gallup to Olivet | 5,265.87 mi (8,474.60 km) |
| Gallup to Ollioules | 5,621.92 mi (9,047.60 km) |
| Gallup to Olonne-sur-Mer | 5,184.35 mi (8,343.41 km) |
| Gallup to Oloron-Sainte-Marie | 5,368.90 mi (8,640.41 km) |
| Gallup to Onet Village | 5,443.42 mi (8,760.34 km) |
| Gallup to Onnaing | 5,216.89 mi (8,395.78 km) |
| Gallup to Orange | 5,537.45 mi (8,911.66 km) |
| Gallup to Orchies | 5,200.99 mi (8,370.19 km) |
| Gallup to Orleans | 5,264.52 mi (8,472.43 km) |
| Gallup to Orly | 5,245.81 mi (8,442.32 km) |
| Gallup to Ormesson-sur-Marne | 5,249.19 mi (8,447.76 km) |
| Gallup to Orsay | 5,240.45 mi (8,433.69 km) |
