| Wyoming to Octeville | 3,828.96 mi (6,162.11 km) |
| Wyoming to Oignies | 3,981.23 mi (6,407.18 km) |
| Wyoming to Oissel | 3,946.16 mi (6,350.73 km) |
| Wyoming to Olivet | 4,029.29 mi (6,484.51 km) |
| Wyoming to Ollioules | 4,366.66 mi (7,027.46 km) |
| Wyoming to Olonne-sur-Mer | 3,925.99 mi (6,318.27 km) |
| Wyoming to Oloron-Sainte-Marie | 4,092.92 mi (6,586.92 km) |
| Wyoming to Onet Village | 4,184.63 mi (6,734.51 km) |
| Wyoming to Onnaing | 4,007.08 mi (6,448.77 km) |
| Wyoming to Orange | 4,284.87 mi (6,895.83 km) |
| Wyoming to Orchies | 3,990.60 mi (6,422.24 km) |
| Wyoming to Orleans | 4,028.26 mi (6,482.86 km) |
| Wyoming to Orly | 4,017.86 mi (6,466.11 km) |
| Wyoming to Ormesson-sur-Marne | 4,022.10 mi (6,472.94 km) |
| Wyoming to Orsay | 4,011.39 mi (6,455.70 km) |
