| Annapolis to Olivares | 3,721.48 mi (5,989.14 km) |
| Annapolis to Olivenza | 3,638.20 mi (5,855.12 km) |
| Annapolis to Olot | 3,996.27 mi (6,431.37 km) |
| Annapolis to Onate | 3,744.67 mi (6,026.47 km) |
| Annapolis to Onda | 3,933.41 mi (6,330.21 km) |
| Annapolis to Onteniente | 3,951.41 mi (6,359.18 km) |
| Annapolis to Orihuela | 3,957.53 mi (6,369.03 km) |
| Annapolis to Osuna | 3,779.07 mi (6,081.83 km) |
| Annapolis to Ourense | 3,505.60 mi (5,641.72 km) |
| Annapolis to Oviedo | 3,576.01 mi (5,755.04 km) |
| Annapolis to Paiporta | 3,942.11 mi (6,344.21 km) |
| Annapolis to Pajara | 3,593.19 mi (5,782.67 km) |
| Annapolis to Palafolls | 4,023.82 mi (6,475.72 km) |
| Annapolis to Palafrugell | 4,035.37 mi (6,494.30 km) |
| Annapolis to Palamos | 4,035.97 mi (6,495.26 km) |
