| Petroupoli to Olivenza | 1,660.56 mi (2,672.41 km) |
| Petroupoli to Olot | 1,152.78 mi (1,855.23 km) |
| Petroupoli to Onate | 1,407.20 mi (2,264.66 km) |
| Petroupoli to Onda | 1,288.88 mi (2,074.26 km) |
| Petroupoli to Onteniente | 1,312.04 mi (2,111.52 km) |
| Petroupoli to Orihuela | 1,335.98 mi (2,150.05 km) |
| Petroupoli to Osuna | 1,569.62 mi (2,526.06 km) |
| Petroupoli to Ourense | 1,681.54 mi (2,706.18 km) |
| Petroupoli to Oviedo | 1,581.08 mi (2,544.50 km) |
| Petroupoli to Paiporta | 1,298.76 mi (2,090.15 km) |
| Petroupoli to Pajara | 2,267.37 mi (3,648.98 km) |
| Petroupoli to Palafolls | 1,135.36 mi (1,827.18 km) |
| Petroupoli to Palafrugell | 1,116.18 mi (1,796.31 km) |
| Petroupoli to Palamos | 1,117.32 mi (1,798.16 km) |
| Petroupoli to Palencia | 1,510.93 mi (2,431.61 km) |
