| Chapel Hill to Oberkirch | 4,296.65 mi (6,914.80 km) |
| Chapel Hill to Obernburg am Main | 4,303.77 mi (6,926.26 km) |
| Chapel Hill to Obernkirchen | 4,236.50 mi (6,818.00 km) |
| Chapel Hill to Oberschleissheim | 4,449.76 mi (7,161.19 km) |
| Chapel Hill to Oberstdorf | 4,421.42 mi (7,115.59 km) |
| Chapel Hill to Obertraubling | 4,452.57 mi (7,165.72 km) |
| Chapel Hill to Obertshausen | 4,284.93 mi (6,895.93 km) |
| Chapel Hill to Oberursel | 4,270.75 mi (6,873.11 km) |
| Chapel Hill to Ochsenfurt | 4,346.83 mi (6,995.55 km) |
| Chapel Hill to Ochsenhausen | 4,387.85 mi (7,061.56 km) |
| Chapel Hill to Ochtrup | 4,162.50 mi (6,698.90 km) |
| Chapel Hill to Odenthal | 4,189.57 mi (6,742.46 km) |
| Chapel Hill to Oelde | 4,209.95 mi (6,775.27 km) |
| Chapel Hill to Oelsnitz | 4,408.82 mi (7,095.32 km) |
| Chapel Hill to Oer-Erkenschwick | 4,179.24 mi (6,725.84 km) |
