| Hillsborough to Octeville | 3,475.39 mi (5,593.11 km) |
| Hillsborough to Oignies | 3,648.52 mi (5,871.73 km) |
| Hillsborough to Oissel | 3,597.47 mi (5,789.57 km) |
| Hillsborough to Olivet | 3,669.50 mi (5,905.48 km) |
| Hillsborough to Ollioules | 3,980.29 mi (6,405.66 km) |
| Hillsborough to Olonne-sur-Mer | 3,543.63 mi (5,702.93 km) |
| Hillsborough to Oloron-Sainte-Marie | 3,685.97 mi (5,932.00 km) |
| Hillsborough to Onet Village | 3,797.22 mi (6,111.03 km) |
| Hillsborough to Onnaing | 3,675.35 mi (5,914.90 km) |
| Hillsborough to Orange | 3,902.86 mi (6,281.05 km) |
| Hillsborough to Orchies | 3,658.65 mi (5,888.03 km) |
| Hillsborough to Orleans | 3,668.84 mi (5,904.43 km) |
| Hillsborough to Orly | 3,667.44 mi (5,902.18 km) |
| Hillsborough to Ormesson-sur-Marne | 3,672.49 mi (5,910.31 km) |
| Hillsborough to Orsay | 3,659.95 mi (5,890.12 km) |
