| Gioia del Colle to Oberkirch | 687.97 mi (1,107.19 km) |
| Gioia del Colle to Obernburg am Main | 729.46 mi (1,173.95 km) |
| Gioia del Colle to Obernkirchen | 873.81 mi (1,406.26 km) |
| Gioia del Colle to Oberschleissheim | 578.31 mi (930.69 km) |
| Gioia del Colle to Oberstdorf | 563.05 mi (906.15 km) |
| Gioia del Colle to Obertraubling | 610.24 mi (982.08 km) |
| Gioia del Colle to Obertshausen | 750.11 mi (1,207.19 km) |
| Gioia del Colle to Oberursel | 764.34 mi (1,230.09 km) |
| Gioia del Colle to Ochsenfurt | 696.13 mi (1,120.31 km) |
| Gioia del Colle to Ochsenhausen | 608.71 mi (979.63 km) |
| Gioia del Colle to Ochtrup | 912.35 mi (1,468.28 km) |
| Gioia del Colle to Odenthal | 848.42 mi (1,365.40 km) |
| Gioia del Colle to Oelde | 868.51 mi (1,397.73 km) |
| Gioia del Colle to Oelsnitz | 702.88 mi (1,131.18 km) |
| Gioia del Colle to Oer-Erkenschwick | 878.88 mi (1,414.42 km) |
