| Imperial Beach to Oberkirch | 5,894.62 mi (9,486.48 km) |
| Imperial Beach to Obernburg am Main | 5,861.80 mi (9,433.65 km) |
| Imperial Beach to Obernkirchen | 5,738.72 mi (9,235.57 km) |
| Imperial Beach to Oberschleissheim | 6,016.93 mi (9,683.32 km) |
| Imperial Beach to Oberstdorf | 6,020.63 mi (9,689.26 km) |
| Imperial Beach to Obertraubling | 5,997.59 mi (9,652.19 km) |
| Imperial Beach to Obertshausen | 5,841.00 mi (9,400.18 km) |
| Imperial Beach to Oberursel | 5,826.34 mi (9,376.59 km) |
| Imperial Beach to Ochsenfurt | 5,899.45 mi (9,494.25 km) |
| Imperial Beach to Ochsenhausen | 5,976.39 mi (9,618.07 km) |
| Imperial Beach to Ochtrup | 5,685.17 mi (9,149.39 km) |
| Imperial Beach to Odenthal | 5,740.62 mi (9,238.64 km) |
| Imperial Beach to Oelde | 5,732.07 mi (9,224.87 km) |
| Imperial Beach to Oelsnitz | 5,921.72 mi (9,530.09 km) |
| Imperial Beach to Oer-Erkenschwick | 5,714.70 mi (9,196.93 km) |
