| Somma Lombardo to Navodari | 974.85 mi (1,568.88 km) |
| Somma Lombardo to Negresti-Oas | 711.73 mi (1,145.42 km) |
| Somma Lombardo to Nehoiu | 850.89 mi (1,369.37 km) |
| Somma Lombardo to Ocna Mures | 727.66 mi (1,171.05 km) |
| Somma Lombardo to Odobesti | 883.97 mi (1,422.61 km) |
| Somma Lombardo to Odorheiu Secuiesc | 796.57 mi (1,281.95 km) |
| Somma Lombardo to Oltenita | 883.09 mi (1,421.20 km) |
| Somma Lombardo to Onesti | 866.74 mi (1,394.88 km) |
| Somma Lombardo to Oradea | 636.69 mi (1,024.65 km) |
| Somma Lombardo to Orastie | 698.01 mi (1,123.34 km) |
| Somma Lombardo to Oravita | 631.26 mi (1,015.92 km) |
| Somma Lombardo to Orsova | 669.20 mi (1,076.97 km) |
| Somma Lombardo to Otelu Rosu | 659.29 mi (1,061.03 km) |
| Somma Lombardo to Otopeni | 848.83 mi (1,366.07 km) |
| Somma Lombardo to Ovidiu | 973.06 mi (1,565.98 km) |
