| Santiponce to Oberkirch | 1,044.43 mi (1,680.85 km) |
| Santiponce to Obernburg am Main | 1,140.65 mi (1,835.71 km) |
| Santiponce to Obernkirchen | 1,260.05 mi (2,027.85 km) |
| Santiponce to Oberschleissheim | 1,158.82 mi (1,864.94 km) |
| Santiponce to Oberstdorf | 1,076.91 mi (1,733.12 km) |
| Santiponce to Obertraubling | 1,209.22 mi (1,946.06 km) |
| Santiponce to Obertshausen | 1,141.53 mi (1,837.11 km) |
| Santiponce to Oberursel | 1,140.09 mi (1,834.79 km) |
| Santiponce to Ochsenfurt | 1,162.77 mi (1,871.30 km) |
| Santiponce to Ochsenhausen | 1,090.70 mi (1,755.31 km) |
| Santiponce to Ochtrup | 1,204.96 mi (1,939.19 km) |
| Santiponce to Odenthal | 1,139.54 mi (1,833.92 km) |
| Santiponce to Oelde | 1,210.50 mi (1,948.10 km) |
| Santiponce to Oelsnitz | 1,268.46 mi (2,041.40 km) |
| Santiponce to Oer-Erkenschwick | 1,175.85 mi (1,892.35 km) |
