| Calheta to Oberkirch | 1,702.31 mi (2,739.61 km) |
| Calheta to Obernburg am Main | 1,789.78 mi (2,880.38 km) |
| Calheta to Obernkirchen | 1,881.42 mi (3,027.85 km) |
| Calheta to Oberschleissheim | 1,834.43 mi (2,952.23 km) |
| Calheta to Oberstdorf | 1,755.64 mi (2,825.42 km) |
| Calheta to Obertraubling | 1,880.45 mi (3,026.29 km) |
| Calheta to Obertshausen | 1,786.41 mi (2,874.95 km) |
| Calheta to Oberursel | 1,781.92 mi (2,867.73 km) |
| Calheta to Ochsenfurt | 1,818.67 mi (2,926.87 km) |
| Calheta to Ochsenhausen | 1,762.05 mi (2,835.75 km) |
| Calheta to Ochtrup | 1,813.68 mi (2,918.84 km) |
| Calheta to Odenthal | 1,761.94 mi (2,835.56 km) |
| Calheta to Oelde | 1,830.56 mi (2,946.00 km) |
| Calheta to Oelsnitz | 1,925.86 mi (3,099.38 km) |
| Calheta to Oer-Erkenschwick | 1,791.84 mi (2,883.69 km) |
