| Tomball to Octeville | 4,831.76 mi (7,775.96 km) |
| Tomball to Oignies | 4,994.43 mi (8,037.75 km) |
| Tomball to Oissel | 4,951.78 mi (7,969.13 km) |
| Tomball to Olivet | 5,029.29 mi (8,093.87 km) |
| Tomball to Ollioules | 5,350.97 mi (8,611.55 km) |
| Tomball to Olonne-sur-Mer | 4,912.11 mi (7,905.27 km) |
| Tomball to Oloron-Sainte-Marie | 5,061.46 mi (8,145.63 km) |
| Tomball to Onet Village | 5,167.87 mi (8,316.89 km) |
| Tomball to Onnaing | 5,020.77 mi (8,080.15 km) |
| Tomball to Orange | 5,271.98 mi (8,484.43 km) |
| Tomball to Orchies | 5,004.15 mi (8,053.40 km) |
| Tomball to Orleans | 5,028.47 mi (8,092.54 km) |
| Tomball to Orly | 5,022.80 mi (8,083.42 km) |
| Tomball to Ormesson-sur-Marne | 5,027.47 mi (8,090.93 km) |
| Tomball to Orsay | 5,015.80 mi (8,072.14 km) |
