| Prior Lake to Oberkirch | 4,444.24 mi (7,152.31 km) |
| Prior Lake to Obernburg am Main | 4,423.72 mi (7,119.29 km) |
| Prior Lake to Obernkirchen | 4,317.31 mi (6,948.04 km) |
| Prior Lake to Oberschleissheim | 4,578.57 mi (7,368.50 km) |
| Prior Lake to Oberstdorf | 4,571.92 mi (7,357.79 km) |
| Prior Lake to Obertraubling | 4,566.35 mi (7,348.83 km) |
| Prior Lake to Obertshausen | 4,403.20 mi (7,086.26 km) |
| Prior Lake to Oberursel | 4,388.43 mi (7,062.50 km) |
| Prior Lake to Ochsenfurt | 4,463.86 mi (7,183.89 km) |
| Prior Lake to Ochsenhausen | 4,530.36 mi (7,290.90 km) |
| Prior Lake to Ochtrup | 4,255.63 mi (6,848.78 km) |
| Prior Lake to Odenthal | 4,302.64 mi (6,924.43 km) |
| Prior Lake to Oelde | 4,303.64 mi (6,926.04 km) |
| Prior Lake to Oelsnitz | 4,500.19 mi (7,242.36 km) |
| Prior Lake to Oer-Erkenschwick | 4,281.42 mi (6,890.28 km) |
