| Wolf Trap to Olivares | 3,761.04 mi (6,052.81 km) |
| Wolf Trap to Olivenza | 3,677.50 mi (5,918.36 km) |
| Wolf Trap to Olot | 4,033.30 mi (6,490.97 km) |
| Wolf Trap to Onate | 3,782.00 mi (6,086.54 km) |
| Wolf Trap to Onda | 3,971.56 mi (6,391.60 km) |
| Wolf Trap to Onteniente | 3,989.95 mi (6,421.21 km) |
| Wolf Trap to Orihuela | 3,996.34 mi (6,431.49 km) |
| Wolf Trap to Osuna | 3,818.58 mi (6,145.41 km) |
| Wolf Trap to Ourense | 3,543.78 mi (5,703.16 km) |
| Wolf Trap to Oviedo | 3,613.60 mi (5,815.53 km) |
| Wolf Trap to Paiporta | 3,980.44 mi (6,405.91 km) |
| Wolf Trap to Pajara | 3,634.93 mi (5,849.85 km) |
| Wolf Trap to Palafolls | 4,061.00 mi (6,535.56 km) |
| Wolf Trap to Palafrugell | 4,072.41 mi (6,553.91 km) |
| Wolf Trap to Palamos | 4,073.04 mi (6,554.92 km) |
