| Ashburn to Olivares | 3,768.00 mi (6,064.01 km) |
| Ashburn to Olivenza | 3,684.28 mi (5,929.28 km) |
| Ashburn to Olot | 4,038.76 mi (6,499.76 km) |
| Ashburn to Onate | 3,787.62 mi (6,095.58 km) |
| Ashburn to Onda | 3,977.63 mi (6,401.38 km) |
| Ashburn to Onteniente | 3,996.26 mi (6,431.36 km) |
| Ashburn to Orihuela | 4,002.81 mi (6,441.90 km) |
| Ashburn to Osuna | 3,825.49 mi (6,156.54 km) |
| Ashburn to Ourense | 3,549.88 mi (5,712.98 km) |
| Ashburn to Oviedo | 3,619.36 mi (5,824.80 km) |
| Ashburn to Paiporta | 3,986.63 mi (6,415.86 km) |
| Ashburn to Pajara | 3,643.95 mi (5,864.37 km) |
| Ashburn to Palafolls | 4,066.55 mi (6,544.47 km) |
| Ashburn to Palafrugell | 4,077.87 mi (6,562.70 km) |
| Ashburn to Palamos | 4,078.52 mi (6,563.74 km) |
