| Omagh to Olivares | 1,187.78 mi (1,911.55 km) |
| Omagh to Olivenza | 1,098.91 mi (1,768.52 km) |
| Omagh to Olot | 965.52 mi (1,553.86 km) |
| Omagh to Onate | 828.20 mi (1,332.86 km) |
| Omagh to Onda | 1,061.68 mi (1,708.62 km) |
| Omagh to Onteniente | 1,133.27 mi (1,823.83 km) |
| Omagh to Orihuela | 1,178.62 mi (1,896.81 km) |
| Omagh to Osuna | 1,203.70 mi (1,937.16 km) |
| Omagh to Ourense | 847.04 mi (1,363.18 km) |
| Omagh to Oviedo | 778.64 mi (1,253.09 km) |
| Omagh to Paiporta | 1,095.21 mi (1,762.57 km) |
| Omagh to Pajara | 1,844.96 mi (2,969.18 km) |
| Omagh to Palafolls | 1,003.38 mi (1,614.78 km) |
| Omagh to Palafrugell | 996.52 mi (1,603.74 km) |
| Omagh to Palamos | 1,000.27 mi (1,609.78 km) |
