| Sierra Vista to Octeville | 5,331.88 mi (8,580.83 km) |
| Sierra Vista to Oignies | 5,465.17 mi (8,795.35 km) |
| Sierra Vista to Oissel | 5,443.64 mi (8,760.70 km) |
| Sierra Vista to Olivet | 5,534.02 mi (8,906.14 km) |
| Sierra Vista to Ollioules | 5,886.36 mi (9,473.18 km) |
| Sierra Vista to Olonne-sur-Mer | 5,447.44 mi (8,766.81 km) |
| Sierra Vista to Oloron-Sainte-Marie | 5,627.18 mi (9,056.07 km) |
| Sierra Vista to Onet Village | 5,706.74 mi (9,184.11 km) |
| Sierra Vista to Onnaing | 5,489.73 mi (8,834.87 km) |
| Sierra Vista to Orange | 5,802.44 mi (9,338.12 km) |
| Sierra Vista to Orchies | 5,473.72 mi (8,809.09 km) |
| Sierra Vista to Orleans | 5,532.73 mi (8,904.07 km) |
| Sierra Vista to Orly | 5,515.60 mi (8,876.50 km) |
| Sierra Vista to Ormesson-sur-Marne | 5,519.14 mi (8,882.20 km) |
| Sierra Vista to Orsay | 5,510.02 mi (8,867.52 km) |
