| Reisterstown to Octeville | 3,610.53 mi (5,810.58 km) |
| Reisterstown to Oignies | 3,783.11 mi (6,088.33 km) |
| Reisterstown to Oissel | 3,732.52 mi (6,006.91 km) |
| Reisterstown to Olivet | 3,804.80 mi (6,123.24 km) |
| Reisterstown to Ollioules | 4,115.86 mi (6,623.84 km) |
| Reisterstown to Olonne-sur-Mer | 3,679.19 mi (5,921.08 km) |
| Reisterstown to Oloron-Sainte-Marie | 3,821.40 mi (6,149.96 km) |
| Reisterstown to Onet Village | 3,932.79 mi (6,329.21 km) |
| Reisterstown to Onnaing | 3,809.91 mi (6,131.46 km) |
| Reisterstown to Orange | 4,038.43 mi (6,499.22 km) |
| Reisterstown to Orchies | 3,793.22 mi (6,104.60 km) |
| Reisterstown to Orleans | 3,804.14 mi (6,122.17 km) |
| Reisterstown to Orly | 3,802.55 mi (6,119.61 km) |
| Reisterstown to Ormesson-sur-Marne | 3,807.58 mi (6,127.71 km) |
| Reisterstown to Orsay | 3,795.08 mi (6,107.59 km) |
