| Rosemont to Octeville | 5,325.43 mi (8,570.46 km) |
| Rosemont to Oignies | 5,422.21 mi (8,726.20 km) |
| Rosemont to Oissel | 5,423.89 mi (8,728.90 km) |
| Rosemont to Olivet | 5,524.53 mi (8,890.87 km) |
| Rosemont to Ollioules | 5,897.17 mi (9,490.58 km) |
| Rosemont to Olonne-sur-Mer | 5,474.92 mi (8,811.03 km) |
| Rosemont to Oloron-Sainte-Marie | 5,682.22 mi (9,144.64 km) |
| Rosemont to Onet Village | 5,728.23 mi (9,218.69 km) |
| Rosemont to Onnaing | 5,443.91 mi (8,761.13 km) |
| Rosemont to Orange | 5,810.90 mi (9,351.74 km) |
| Rosemont to Orchies | 5,429.17 mi (8,737.41 km) |
| Rosemont to Orleans | 5,522.80 mi (8,888.08 km) |
| Rosemont to Orly | 5,493.99 mi (8,841.73 km) |
| Rosemont to Ormesson-sur-Marne | 5,496.20 mi (8,845.28 km) |
| Rosemont to Orsay | 5,490.17 mi (8,835.57 km) |
