| Calverton to Olivares | 3,741.28 mi (6,021.00 km) |
| Calverton to Olivenza | 3,657.73 mi (5,886.54 km) |
| Calverton to Olot | 4,013.65 mi (6,459.35 km) |
| Calverton to Onate | 3,762.32 mi (6,054.87 km) |
| Calverton to Onda | 3,951.81 mi (6,359.82 km) |
| Calverton to Onteniente | 3,970.19 mi (6,389.40 km) |
| Calverton to Orihuela | 3,976.56 mi (6,399.66 km) |
| Calverton to Osuna | 3,798.81 mi (6,113.59 km) |
| Calverton to Ourense | 3,524.03 mi (5,671.38 km) |
| Calverton to Oviedo | 3,593.89 mi (5,783.81 km) |
| Calverton to Paiporta | 3,960.69 mi (6,374.11 km) |
| Calverton to Pajara | 3,615.91 mi (5,819.24 km) |
| Calverton to Palafolls | 4,041.34 mi (6,503.91 km) |
| Calverton to Palafrugell | 4,052.76 mi (6,522.29 km) |
| Calverton to Palamos | 4,053.38 mi (6,523.29 km) |
