| Fort Oglethorpe to Olivares | 4,276.53 mi (6,882.41 km) |
| Fort Oglethorpe to Olivenza | 4,194.02 mi (6,749.62 km) |
| Fort Oglethorpe to Olot | 4,552.49 mi (7,326.52 km) |
| Fort Oglethorpe to Onate | 4,301.30 mi (6,922.28 km) |
| Fort Oglethorpe to Onda | 4,490.55 mi (7,226.85 km) |
| Fort Oglethorpe to Onteniente | 4,508.40 mi (7,255.57 km) |
| Fort Oglethorpe to Orihuela | 4,514.26 mi (7,264.99 km) |
| Fort Oglethorpe to Osuna | 4,334.30 mi (6,975.38 km) |
| Fort Oglethorpe to Ourense | 4,062.74 mi (6,538.35 km) |
| Fort Oglethorpe to Oviedo | 4,132.91 mi (6,651.28 km) |
| Fort Oglethorpe to Paiporta | 4,499.22 mi (7,240.79 km) |
| Fort Oglethorpe to Pajara | 4,122.41 mi (6,634.38 km) |
| Fort Oglethorpe to Palafolls | 4,580.27 mi (7,371.23 km) |
| Fort Oglethorpe to Palafrugell | 4,591.60 mi (7,389.47 km) |
| Fort Oglethorpe to Palamos | 4,592.25 mi (7,390.51 km) |
