| Omagh to Nasaud | 1,454.60 mi (2,340.95 km) |
| Omagh to Navodari | 1,737.47 mi (2,796.19 km) |
| Omagh to Negresti-Oas | 1,394.40 mi (2,244.06 km) |
| Omagh to Nehoiu | 1,604.11 mi (2,581.56 km) |
| Omagh to Ocna Mures | 1,466.65 mi (2,360.35 km) |
| Omagh to Odobesti | 1,617.82 mi (2,603.63 km) |
| Omagh to Odorheiu Secuiesc | 1,526.58 mi (2,456.80 km) |
| Omagh to Oltenita | 1,669.46 mi (2,686.74 km) |
| Omagh to Onesti | 1,586.92 mi (2,553.90 km) |
| Omagh to Oradea | 1,364.10 mi (2,195.31 km) |
| Omagh to Orastie | 1,461.99 mi (2,352.84 km) |
| Omagh to Oravita | 1,436.38 mi (2,311.63 km) |
| Omagh to Orsova | 1,477.21 mi (2,377.34 km) |
| Omagh to Otelu Rosu | 1,442.33 mi (2,321.21 km) |
| Omagh to Otopeni | 1,627.76 mi (2,619.62 km) |
