| Colleferro to Oberkirch | 527.52 mi (848.96 km) |
| Colleferro to Obernburg am Main | 590.21 mi (949.85 km) |
| Colleferro to Obernkirchen | 750.31 mi (1,207.51 km) |
| Colleferro to Oberschleissheim | 455.78 mi (733.50 km) |
| Colleferro to Oberstdorf | 414.63 mi (667.28 km) |
| Colleferro to Obertraubling | 501.41 mi (806.94 km) |
| Colleferro to Obertshausen | 609.65 mi (981.14 km) |
| Colleferro to Oberursel | 622.56 mi (1,001.92 km) |
| Colleferro to Ochsenfurt | 565.10 mi (909.43 km) |
| Colleferro to Ochsenhausen | 462.90 mi (744.97 km) |
| Colleferro to Ochtrup | 773.33 mi (1,244.56 km) |
| Colleferro to Odenthal | 700.85 mi (1,127.90 km) |
| Colleferro to Oelde | 734.42 mi (1,181.94 km) |
| Colleferro to Oelsnitz | 601.34 mi (967.76 km) |
| Colleferro to Oer-Erkenschwick | 736.59 mi (1,185.43 km) |
