| Senigallia to Oberkirch | 413.78 mi (665.92 km) |
| Senigallia to Obernburg am Main | 465.03 mi (748.40 km) |
| Senigallia to Obernkirchen | 620.39 mi (998.42 km) |
| Senigallia to Oberschleissheim | 323.32 mi (520.34 km) |
| Senigallia to Oberstdorf | 292.26 mi (470.35 km) |
| Senigallia to Obertraubling | 366.36 mi (589.61 km) |
| Senigallia to Obertshausen | 485.16 mi (780.79 km) |
| Senigallia to Oberursel | 498.75 mi (802.67 km) |
| Senigallia to Ochsenfurt | 436.45 mi (702.40 km) |
| Senigallia to Ochsenhausen | 339.69 mi (546.68 km) |
| Senigallia to Ochtrup | 649.14 mi (1,044.69 km) |
| Senigallia to Odenthal | 580.32 mi (933.94 km) |
| Senigallia to Oelde | 608.04 mi (978.55 km) |
| Senigallia to Oelsnitz | 465.80 mi (749.63 km) |
| Senigallia to Oer-Erkenschwick | 613.68 mi (987.62 km) |
