| Enniskillen to Olivares | 1,171.73 mi (1,885.72 km) |
| Enniskillen to Olivenza | 1,082.22 mi (1,741.66 km) |
| Enniskillen to Olot | 958.63 mi (1,542.77 km) |
| Enniskillen to Onate | 816.47 mi (1,313.98 km) |
| Enniskillen to Onda | 1,051.01 mi (1,691.43 km) |
| Enniskillen to Onteniente | 1,121.92 mi (1,805.56 km) |
| Enniskillen to Orihuela | 1,166.78 mi (1,877.75 km) |
| Enniskillen to Osuna | 1,188.40 mi (1,912.54 km) |
| Enniskillen to Ourense | 829.76 mi (1,335.36 km) |
| Enniskillen to Oviedo | 763.27 mi (1,228.37 km) |
| Enniskillen to Paiporta | 1,084.21 mi (1,744.87 km) |
| Enniskillen to Pajara | 1,825.27 mi (2,937.49 km) |
| Enniskillen to Palafolls | 996.44 mi (1,603.61 km) |
| Enniskillen to Palafrugell | 990.14 mi (1,593.48 km) |
| Enniskillen to Palamos | 993.81 mi (1,599.38 km) |
