| San Ramon to Oberkirch | 5,733.21 mi (9,226.72 km) |
| San Ramon to Obernburg am Main | 5,690.31 mi (9,157.67 km) |
| San Ramon to Obernkirchen | 5,555.94 mi (8,941.42 km) |
| San Ramon to Oberschleissheim | 5,843.76 mi (9,404.62 km) |
| San Ramon to Oberstdorf | 5,856.22 mi (9,424.67 km) |
| San Ramon to Obertraubling | 5,818.96 mi (9,364.71 km) |
| San Ramon to Obertshausen | 5,669.56 mi (9,124.27 km) |
| San Ramon to Oberursel | 5,655.17 mi (9,101.12 km) |
| San Ramon to Ochsenfurt | 5,725.50 mi (9,214.30 km) |
| San Ramon to Ochsenhausen | 5,810.18 mi (9,350.58 km) |
| San Ramon to Ochtrup | 5,509.18 mi (8,866.17 km) |
| San Ramon to Odenthal | 5,570.59 mi (8,965.00 km) |
| San Ramon to Oelde | 5,554.63 mi (8,939.31 km) |
| San Ramon to Oelsnitz | 5,736.67 mi (9,232.28 km) |
| San Ramon to Oer-Erkenschwick | 5,541.25 mi (8,917.78 km) |
