| Unterwellenborn to Oria | 762.42 mi (1,227.00 km) |
| Unterwellenborn to Oristano | 755.61 mi (1,216.03 km) |
| Unterwellenborn to Orta Nova | 675.99 mi (1,087.90 km) |
| Unterwellenborn to Orte | 568.21 mi (914.44 km) |
| Unterwellenborn to Ortona | 590.92 mi (951.00 km) |
| Unterwellenborn to Orvieto | 549.53 mi (884.38 km) |
| Unterwellenborn to Orzinuovi | 369.94 mi (595.36 km) |
| Unterwellenborn to Osimo | 504.93 mi (812.61 km) |
| Unterwellenborn to Ospitaletto | 358.20 mi (576.46 km) |
| Unterwellenborn to Ostuni | 746.44 mi (1,201.27 km) |
| Unterwellenborn to Ottaviano | 693.17 mi (1,115.55 km) |
| Unterwellenborn to Ovada | 435.70 mi (701.18 km) |
| Unterwellenborn to Ozieri | 705.82 mi (1,135.91 km) |
| Unterwellenborn to Paceco | 877.46 mi (1,412.14 km) |
| Unterwellenborn to Pachino | 980.16 mi (1,577.41 km) |
