| Omagh to Noventa Vicentina | 1,049.97 mi (1,689.76 km) |
| Omagh to Novi di Modena | 1,047.47 mi (1,685.74 km) |
| Omagh to Novi Ligure | 984.63 mi (1,584.60 km) |
| Omagh to Nuoro | 1,248.67 mi (2,009.54 km) |
| Omagh to Occhiobello | 1,069.27 mi (1,720.83 km) |
| Omagh to Oderzo | 1,060.16 mi (1,706.16 km) |
| Omagh to Oggiono | 950.92 mi (1,530.35 km) |
| Omagh to Olbia | 1,218.62 mi (1,961.17 km) |
| Omagh to Oleggio | 936.31 mi (1,506.84 km) |
| Omagh to Olgiate Comasco | 938.10 mi (1,509.72 km) |
| Omagh to Olgiate Olona | 942.85 mi (1,517.38 km) |
| Omagh to Omegna | 914.81 mi (1,472.24 km) |
| Omagh to Opera | 966.50 mi (1,555.43 km) |
| Omagh to Oppeano | 1,037.06 mi (1,668.98 km) |
| Omagh to Orbassano | 932.15 mi (1,500.15 km) |
