| Wilmington to Olivares | 3,925.03 mi (6,316.72 km) |
| Wilmington to Olivenza | 3,846.88 mi (6,190.95 km) |
| Wilmington to Olot | 4,236.50 mi (6,817.99 km) |
| Wilmington to Onate | 3,982.08 mi (6,408.53 km) |
| Wilmington to Onda | 4,159.41 mi (6,693.92 km) |
| Wilmington to Onteniente | 4,171.44 mi (6,713.29 km) |
| Wilmington to Orihuela | 4,173.46 mi (6,716.53 km) |
| Wilmington to Osuna | 3,983.51 mi (6,410.83 km) |
| Wilmington to Ourense | 3,732.45 mi (6,006.81 km) |
| Wilmington to Oviedo | 3,810.65 mi (6,132.65 km) |
| Wilmington to Paiporta | 4,165.34 mi (6,703.46 km) |
| Wilmington to Pajara | 3,727.75 mi (5,999.24 km) |
| Wilmington to Palafolls | 4,262.18 mi (6,859.31 km) |
| Wilmington to Palafrugell | 4,275.42 mi (6,880.62 km) |
| Wilmington to Palamos | 4,275.65 mi (6,881.00 km) |
