| Rockwall to Octeville | 4,724.15 mi (7,602.79 km) |
| Rockwall to Oignies | 4,880.43 mi (7,854.29 km) |
| Rockwall to Oissel | 4,842.58 mi (7,793.39 km) |
| Rockwall to Olivet | 4,923.45 mi (7,923.53 km) |
| Rockwall to Ollioules | 5,253.83 mi (8,455.21 km) |
| Rockwall to Olonne-sur-Mer | 4,813.59 mi (7,746.73 km) |
| Rockwall to Oloron-Sainte-Marie | 4,971.52 mi (8,000.89 km) |
| Rockwall to Onet Village | 5,071.08 mi (8,161.11 km) |
| Rockwall to Onnaing | 4,906.45 mi (7,896.16 km) |
| Rockwall to Orange | 5,173.33 mi (8,325.67 km) |
| Rockwall to Orchies | 4,889.91 mi (7,869.55 km) |
| Rockwall to Orleans | 4,922.51 mi (7,922.02 km) |
| Rockwall to Orly | 4,914.06 mi (7,908.41 km) |
| Rockwall to Ormesson-sur-Marne | 4,918.47 mi (7,915.52 km) |
| Rockwall to Orsay | 4,907.37 mi (7,897.65 km) |
