| Kallithea to Olivenza | 1,662.58 mi (2,675.66 km) |
| Kallithea to Olot | 1,155.71 mi (1,859.94 km) |
| Kallithea to Onate | 1,410.25 mi (2,269.57 km) |
| Kallithea to Onda | 1,291.12 mi (2,077.85 km) |
| Kallithea to Onteniente | 1,313.94 mi (2,114.58 km) |
| Kallithea to Orihuela | 1,337.67 mi (2,152.77 km) |
| Kallithea to Osuna | 1,571.23 mi (2,528.65 km) |
| Kallithea to Ourense | 1,684.39 mi (2,710.77 km) |
| Kallithea to Oviedo | 1,584.16 mi (2,549.46 km) |
| Kallithea to Paiporta | 1,300.84 mi (2,093.50 km) |
| Kallithea to Pajara | 2,267.70 mi (3,649.51 km) |
| Kallithea to Palafolls | 1,138.14 mi (1,831.65 km) |
| Kallithea to Palafrugell | 1,119.04 mi (1,800.93 km) |
| Kallithea to Palamos | 1,120.17 mi (1,802.74 km) |
| Kallithea to Palencia | 1,513.71 mi (2,436.08 km) |
