| Somma Lombardo to Oberkirch | 199.04 mi (320.32 km) |
| Somma Lombardo to Obernburg am Main | 287.93 mi (463.38 km) |
| Somma Lombardo to Obernkirchen | 455.24 mi (732.64 km) |
| Somma Lombardo to Oberschleissheim | 222.95 mi (358.80 km) |
| Somma Lombardo to Oberstdorf | 140.92 mi (226.79 km) |
| Somma Lombardo to Obertraubling | 278.86 mi (448.79 km) |
| Somma Lombardo to Obertshausen | 302.93 mi (487.51 km) |
| Somma Lombardo to Oberursel | 312.35 mi (502.68 km) |
| Somma Lombardo to Ochsenfurt | 281.34 mi (452.77 km) |
| Somma Lombardo to Ochsenhausen | 175.26 mi (282.05 km) |
| Somma Lombardo to Ochtrup | 455.80 mi (733.54 km) |
| Somma Lombardo to Odenthal | 376.70 mi (606.25 km) |
| Somma Lombardo to Oelde | 425.66 mi (685.03 km) |
| Somma Lombardo to Oelsnitz | 364.04 mi (585.86 km) |
| Somma Lombardo to Oer-Erkenschwick | 416.97 mi (671.06 km) |
