| Concarneau to Obernburg am Main | 608.17 mi (978.76 km) |
| Concarneau to Obernkirchen | 651.60 mi (1,048.64 km) |
| Concarneau to Oberschleissheim | 714.32 mi (1,149.59 km) |
| Concarneau to Oberstdorf | 660.80 mi (1,063.45 km) |
| Concarneau to Obertraubling | 740.04 mi (1,190.97 km) |
| Concarneau to Obertshausen | 597.05 mi (960.85 km) |
| Concarneau to Oberursel | 587.59 mi (945.63 km) |
| Concarneau to Ochsenfurt | 647.67 mi (1,042.32 km) |
| Concarneau to Ochsenhausen | 640.71 mi (1,031.12 km) |
| Concarneau to Ochtrup | 575.74 mi (926.57 km) |
| Concarneau to Odenthal | 540.86 mi (870.43 km) |
| Concarneau to Oelde | 602.17 mi (969.10 km) |
| Concarneau to Oelsnitz | 746.29 mi (1,201.04 km) |
| Concarneau to Oer-Erkenschwick | 561.58 mi (903.78 km) |
| Concarneau to Oerlinghausen | 626.05 mi (1,007.53 km) |
