| Illescas to Nasaud | 1,485.27 mi (2,390.31 km) |
| Illescas to Navodari | 1,674.19 mi (2,694.35 km) |
| Illescas to Negresti-Oas | 1,447.49 mi (2,329.50 km) |
| Illescas to Nehoiu | 1,561.84 mi (2,513.54 km) |
| Illescas to Ocna Mures | 1,450.86 mi (2,334.94 km) |
| Illescas to Odobesti | 1,600.06 mi (2,575.04 km) |
| Illescas to Odorheiu Secuiesc | 1,518.56 mi (2,443.89 km) |
| Illescas to Oltenita | 1,576.59 mi (2,537.28 km) |
| Illescas to Onesti | 1,588.01 mi (2,555.66 km) |
| Illescas to Oradea | 1,367.79 mi (2,201.25 km) |
| Illescas to Orastie | 1,414.97 mi (2,277.17 km) |
| Illescas to Oravita | 1,335.97 mi (2,150.03 km) |
| Illescas to Orsova | 1,368.75 mi (2,202.79 km) |
| Illescas to Otelu Rosu | 1,371.74 mi (2,207.61 km) |
| Illescas to Otopeni | 1,548.65 mi (2,492.31 km) |
