| Brock Hall to Octeville | 3,632.83 mi (5,846.47 km) |
| Brock Hall to Oignies | 3,806.76 mi (6,126.39 km) |
| Brock Hall to Oissel | 3,755.07 mi (6,043.21 km) |
| Brock Hall to Olivet | 3,826.48 mi (6,158.13 km) |
| Brock Hall to Ollioules | 4,135.21 mi (6,654.99 km) |
| Brock Hall to Olonne-sur-Mer | 3,699.22 mi (5,953.31 km) |
| Brock Hall to Oloron-Sainte-Marie | 3,839.26 mi (6,178.69 km) |
| Brock Hall to Onet Village | 3,952.20 mi (6,360.45 km) |
| Brock Hall to Onnaing | 3,833.61 mi (6,169.60 km) |
| Brock Hall to Orange | 4,058.19 mi (6,531.03 km) |
| Brock Hall to Orchies | 3,816.91 mi (6,142.73 km) |
| Brock Hall to Orleans | 3,825.85 mi (6,157.11 km) |
| Brock Hall to Orly | 3,824.92 mi (6,155.62 km) |
| Brock Hall to Ormesson-sur-Marne | 3,830.01 mi (6,163.81 km) |
| Brock Hall to Orsay | 3,817.39 mi (6,143.49 km) |
