| Mount Vernon to Olivares | 3,541.21 mi (5,699.03 km) |
| Mount Vernon to Olivenza | 3,456.58 mi (5,562.83 km) |
| Mount Vernon to Olot | 3,806.65 mi (6,126.22 km) |
| Mount Vernon to Onate | 3,555.81 mi (5,722.53 km) |
| Mount Vernon to Onda | 3,746.99 mi (6,030.20 km) |
| Mount Vernon to Onteniente | 3,766.43 mi (6,061.49 km) |
| Mount Vernon to Orihuela | 3,773.61 mi (6,073.03 km) |
| Mount Vernon to Osuna | 3,598.48 mi (5,791.20 km) |
| Mount Vernon to Ourense | 3,319.35 mi (5,341.98 km) |
| Mount Vernon to Oviedo | 3,387.89 mi (5,452.27 km) |
| Mount Vernon to Paiporta | 3,756.35 mi (6,045.27 km) |
| Mount Vernon to Pajara | 3,436.77 mi (5,530.95 km) |
| Mount Vernon to Palafolls | 3,834.58 mi (6,171.16 km) |
| Mount Vernon to Palafrugell | 3,845.77 mi (6,189.17 km) |
| Mount Vernon to Palamos | 3,846.44 mi (6,190.25 km) |
