| Ardahan to Olivares | 2,591.55 mi (4,170.69 km) |
| Ardahan to Olivenza | 2,609.07 mi (4,198.88 km) |
| Ardahan to Olot | 2,058.16 mi (3,312.29 km) |
| Ardahan to Onate | 2,289.85 mi (3,685.16 km) |
| Ardahan to Onda | 2,234.44 mi (3,595.98 km) |
| Ardahan to Onteniente | 2,275.21 mi (3,661.60 km) |
| Ardahan to Orihuela | 2,308.90 mi (3,715.81 km) |
| Ardahan to Osuna | 2,542.39 mi (4,091.58 km) |
| Ardahan to Ourense | 2,569.84 mi (4,135.75 km) |
| Ardahan to Oviedo | 2,453.06 mi (3,947.82 km) |
| Ardahan to Paiporta | 2,252.92 mi (3,625.72 km) |
| Ardahan to Pajara | 3,283.60 mi (5,284.44 km) |
| Ardahan to Palafolls | 2,052.45 mi (3,303.09 km) |
| Ardahan to Palafrugell | 2,028.05 mi (3,263.84 km) |
| Ardahan to Palamos | 2,030.80 mi (3,268.26 km) |
