| Macerata Campania to Oberkirch | 597.90 mi (962.23 km) |
| Macerata Campania to Obernburg am Main | 654.71 mi (1,053.65 km) |
| Macerata Campania to Obernkirchen | 810.90 mi (1,305.01 km) |
| Macerata Campania to Oberschleissheim | 513.66 mi (826.66 km) |
| Macerata Campania to Oberstdorf | 480.49 mi (773.28 km) |
| Macerata Campania to Obertraubling | 555.27 mi (893.62 km) |
| Macerata Campania to Obertshausen | 674.64 mi (1,085.74 km) |
| Macerata Campania to Oberursel | 688.03 mi (1,107.27 km) |
| Macerata Campania to Ochsenfurt | 626.86 mi (1,008.84 km) |
| Macerata Campania to Ochsenhausen | 528.43 mi (850.43 km) |
| Macerata Campania to Ochtrup | 838.69 mi (1,349.74 km) |
| Macerata Campania to Odenthal | 768.39 mi (1,236.61 km) |
| Macerata Campania to Oelde | 798.16 mi (1,284.51 km) |
| Macerata Campania to Oelsnitz | 653.84 mi (1,052.25 km) |
| Macerata Campania to Oer-Erkenschwick | 802.75 mi (1,291.91 km) |
