| Forest Hill to Oberkirch | 5,190.11 mi (8,352.68 km) |
| Forest Hill to Obernburg am Main | 5,180.91 mi (8,337.87 km) |
| Forest Hill to Obernkirchen | 5,088.80 mi (8,189.63 km) |
| Forest Hill to Oberschleissheim | 5,333.51 mi (8,583.45 km) |
| Forest Hill to Oberstdorf | 5,317.69 mi (8,557.99 km) |
| Forest Hill to Obertraubling | 5,327.27 mi (8,573.42 km) |
| Forest Hill to Obertshausen | 5,160.88 mi (8,305.63 km) |
| Forest Hill to Oberursel | 5,146.22 mi (8,282.03 km) |
| Forest Hill to Ochsenfurt | 5,222.58 mi (8,404.94 km) |
| Forest Hill to Ochsenhausen | 5,279.16 mi (8,495.99 km) |
| Forest Hill to Ochtrup | 5,021.88 mi (8,081.93 km) |
| Forest Hill to Odenthal | 5,061.49 mi (8,145.68 km) |
| Forest Hill to Oelde | 5,070.11 mi (8,159.55 km) |
| Forest Hill to Oelsnitz | 5,269.30 mi (8,480.12 km) |
| Forest Hill to Oer-Erkenschwick | 5,044.39 mi (8,118.16 km) |
