| Wyoming to Olivares | 4,058.10 mi (6,530.88 km) |
| Wyoming to Olivenza | 3,967.73 mi (6,385.44 km) |
| Wyoming to Olot | 4,262.94 mi (6,860.55 km) |
| Wyoming to Onate | 4,020.86 mi (6,470.95 km) |
| Wyoming to Onda | 4,228.48 mi (6,805.08 km) |
| Wyoming to Onteniente | 4,256.99 mi (6,850.97 km) |
| Wyoming to Orihuela | 4,270.24 mi (6,872.28 km) |
| Wyoming to Osuna | 4,113.47 mi (6,619.99 km) |
| Wyoming to Ourense | 3,805.70 mi (6,124.69 km) |
| Wyoming to Oviedo | 3,860.33 mi (6,212.60 km) |
| Wyoming to Paiporta | 4,242.11 mi (6,827.02 km) |
| Wyoming to Pajara | 4,022.69 mi (6,473.89 km) |
| Wyoming to Palafolls | 4,293.87 mi (6,910.32 km) |
| Wyoming to Palafrugell | 4,301.85 mi (6,923.16 km) |
| Wyoming to Palamos | 4,303.17 mi (6,925.29 km) |
