| Crest Hill to Oberkirch | 4,398.15 mi (7,078.14 km) |
| Crest Hill to Obernburg am Main | 4,387.39 mi (7,060.81 km) |
| Crest Hill to Obernkirchen | 4,294.11 mi (6,910.70 km) |
| Crest Hill to Oberschleissheim | 4,540.35 mi (7,306.99 km) |
| Crest Hill to Oberstdorf | 4,525.86 mi (7,283.66 km) |
| Crest Hill to Obertraubling | 4,533.43 mi (7,295.85 km) |
| Crest Hill to Obertshausen | 4,367.29 mi (7,028.47 km) |
| Crest Hill to Oberursel | 4,352.61 mi (7,004.84 km) |
| Crest Hill to Ochsenfurt | 4,428.91 mi (7,127.65 km) |
| Crest Hill to Ochsenhausen | 4,486.82 mi (7,220.84 km) |
| Crest Hill to Ochtrup | 4,227.45 mi (6,803.43 km) |
| Crest Hill to Odenthal | 4,267.72 mi (6,868.23 km) |
| Crest Hill to Oelde | 4,275.69 mi (6,881.05 km) |
| Crest Hill to Oelsnitz | 4,474.77 mi (7,201.45 km) |
| Crest Hill to Oer-Erkenschwick | 4,250.22 mi (6,840.07 km) |
