| Bad Krozingen to Obernburg am Main | 148.14 mi (238.42 km) |
| Bad Krozingen to Obernkirchen | 307.02 mi (494.10 km) |
| Bad Krozingen to Oberschleissheim | 179.94 mi (289.58 km) |
| Bad Krozingen to Oberstdorf | 125.02 mi (201.20 km) |
| Bad Krozingen to Obertraubling | 217.16 mi (349.48 km) |
| Bad Krozingen to Obertshausen | 157.18 mi (252.96 km) |
| Bad Krozingen to Oberursel | 162.90 mi (262.16 km) |
| Bad Krozingen to Ochsenfurt | 161.08 mi (259.23 km) |
| Bad Krozingen to Ochsenhausen | 104.50 mi (168.17 km) |
| Bad Krozingen to Ochtrup | 297.19 mi (478.29 km) |
| Bad Krozingen to Odenthal | 216.92 mi (349.10 km) |
| Bad Krozingen to Oelde | 271.35 mi (436.70 km) |
| Bad Krozingen to Oelsnitz | 265.54 mi (427.35 km) |
| Bad Krozingen to Oer-Erkenschwick | 258.18 mi (415.51 km) |
| Bad Krozingen to Oerlinghausen | 283.10 mi (455.61 km) |
