| Santarem to Oberkirch | 1,049.78 mi (1,689.46 km) |
| Santarem to Obernburg am Main | 1,138.51 mi (1,832.26 km) |
| Santarem to Obernkirchen | 1,237.47 mi (1,991.51 km) |
| Santarem to Oberschleissheim | 1,181.99 mi (1,902.23 km) |
| Santarem to Oberstdorf | 1,103.78 mi (1,776.36 km) |
| Santarem to Obertraubling | 1,227.65 mi (1,975.70 km) |
| Santarem to Obertshausen | 1,135.88 mi (1,828.02 km) |
| Santarem to Oberursel | 1,131.99 mi (1,821.75 km) |
| Santarem to Ochsenfurt | 1,166.52 mi (1,877.34 km) |
| Santarem to Ochsenhausen | 1,109.33 mi (1,785.29 km) |
| Santarem to Ochtrup | 1,173.65 mi (1,888.81 km) |
| Santarem to Odenthal | 1,116.96 mi (1,797.57 km) |
| Santarem to Oelde | 1,186.74 mi (1,909.87 km) |
| Santarem to Oelsnitz | 1,273.72 mi (2,049.85 km) |
| Santarem to Oer-Erkenschwick | 1,149.11 mi (1,849.32 km) |
