| Bad Mergentheim to Oria | 730.11 mi (1,175.00 km) |
| Bad Mergentheim to Oristano | 665.38 mi (1,070.82 km) |
| Bad Mergentheim to Orta Nova | 633.33 mi (1,019.24 km) |
| Bad Mergentheim to Orte | 502.31 mi (808.39 km) |
| Bad Mergentheim to Ortona | 541.62 mi (871.66 km) |
| Bad Mergentheim to Orvieto | 481.76 mi (775.33 km) |
| Bad Mergentheim to Orzinuovi | 283.39 mi (456.07 km) |
| Bad Mergentheim to Osimo | 451.60 mi (726.78 km) |
| Bad Mergentheim to Ospitaletto | 272.93 mi (439.23 km) |
| Bad Mergentheim to Ostuni | 714.76 mi (1,150.30 km) |
| Bad Mergentheim to Ottaviano | 639.86 mi (1,029.76 km) |
| Bad Mergentheim to Ovada | 339.95 mi (547.10 km) |
| Bad Mergentheim to Ozieri | 617.09 mi (993.11 km) |
| Bad Mergentheim to Paceco | 807.61 mi (1,299.73 km) |
| Bad Mergentheim to Pachino | 922.70 mi (1,484.94 km) |
