| San Giljan to Oberkirch | 930.35 mi (1,497.26 km) |
| San Giljan to Obernburg am Main | 998.61 mi (1,607.10 km) |
| San Giljan to Obernkirchen | 1,159.75 mi (1,866.44 km) |
| San Giljan to Oberschleissheim | 864.93 mi (1,391.97 km) |
| San Giljan to Oberstdorf | 822.84 mi (1,324.23 km) |
| San Giljan to Obertraubling | 909.10 mi (1,463.06 km) |
| San Giljan to Obertshausen | 1,017.73 mi (1,637.88 km) |
| San Giljan to Oberursel | 1,030.30 mi (1,658.10 km) |
| San Giljan to Ochsenfurt | 974.45 mi (1,568.23 km) |
| San Giljan to Ochsenhausen | 871.11 mi (1,401.91 km) |
| San Giljan to Ochtrup | 1,180.78 mi (1,900.27 km) |
| San Giljan to Odenthal | 1,106.46 mi (1,780.67 km) |
| San Giljan to Oelde | 1,142.96 mi (1,839.41 km) |
| San Giljan to Oelsnitz | 1,008.41 mi (1,622.87 km) |
| San Giljan to Oer-Erkenschwick | 1,143.46 mi (1,840.22 km) |
