| Irving to Nasaud | 5,814.17 mi (9,357.00 km) |
| Irving to Navodari | 6,102.09 mi (9,820.36 km) |
| Irving to Negresti-Oas | 5,753.08 mi (9,258.68 km) |
| Irving to Nehoiu | 5,972.29 mi (9,611.47 km) |
| Irving to Ocna Mures | 5,838.15 mi (9,395.59 km) |
| Irving to Odobesti | 5,977.71 mi (9,620.19 km) |
| Irving to Odorheiu Secuiesc | 5,891.22 mi (9,481.00 km) |
| Irving to Oltenita | 6,046.04 mi (9,730.16 km) |
| Irving to Onesti | 5,943.42 mi (9,565.01 km) |
| Irving to Oradea | 5,738.79 mi (9,235.69 km) |
| Irving to Orastie | 5,840.78 mi (9,399.82 km) |
| Irving to Oravita | 5,824.72 mi (9,373.98 km) |
| Irving to Orsova | 5,865.08 mi (9,438.94 km) |
| Irving to Otelu Rosu | 5,826.39 mi (9,376.67 km) |
| Irving to Otopeni | 6,003.58 mi (9,661.83 km) |
