| Greensburg to Olivares | 3,835.84 mi (6,173.18 km) |
| Greensburg to Olivenza | 3,749.94 mi (6,034.95 km) |
| Greensburg to Olot | 4,087.17 mi (6,577.66 km) |
| Greensburg to Onate | 3,838.26 mi (6,177.09 km) |
| Greensburg to Onda | 4,033.91 mi (6,491.96 km) |
| Greensburg to Onteniente | 4,055.56 mi (6,526.79 km) |
| Greensburg to Orihuela | 4,064.14 mi (6,540.60 km) |
| Greensburg to Osuna | 3,892.78 mi (6,264.82 km) |
| Greensburg to Ourense | 3,606.87 mi (5,804.70 km) |
| Greensburg to Oviedo | 3,672.00 mi (5,909.51 km) |
| Greensburg to Paiporta | 4,044.32 mi (6,508.71 km) |
| Greensburg to Pajara | 3,739.33 mi (6,017.87 km) |
| Greensburg to Palafolls | 4,115.94 mi (6,623.97 km) |
| Greensburg to Palafrugell | 4,126.29 mi (6,640.63 km) |
| Greensburg to Palamos | 4,127.14 mi (6,641.99 km) |
