| Castagneto Carducci to Navodari | 900.85 mi (1,449.77 km) |
| Castagneto Carducci to Negresti-Oas | 699.52 mi (1,125.76 km) |
| Castagneto Carducci to Nehoiu | 790.34 mi (1,271.92 km) |
| Castagneto Carducci to Ocna Mures | 686.41 mi (1,104.67 km) |
| Castagneto Carducci to Odobesti | 829.98 mi (1,335.73 km) |
| Castagneto Carducci to Odorheiu Secuiesc | 752.29 mi (1,210.69 km) |
| Castagneto Carducci to Oltenita | 803.28 mi (1,292.76 km) |
| Castagneto Carducci to Onesti | 820.53 mi (1,320.51 km) |
| Castagneto Carducci to Oradea | 613.59 mi (987.48 km) |
| Castagneto Carducci to Orastie | 647.14 mi (1,041.47 km) |
| Castagneto Carducci to Oravita | 564.53 mi (908.52 km) |
| Castagneto Carducci to Orsova | 596.06 mi (959.26 km) |
| Castagneto Carducci to Otelu Rosu | 602.42 mi (969.51 km) |
| Castagneto Carducci to Otopeni | 775.43 mi (1,247.94 km) |
| Castagneto Carducci to Ovidiu | 898.29 mi (1,445.66 km) |
