| La Crescenta-Montrose to Oberkirch | 5,832.65 mi (9,386.75 km) |
| La Crescenta-Montrose to Obernburg am Main | 5,797.01 mi (9,329.38 km) |
| La Crescenta-Montrose to Obernkirchen | 5,670.69 mi (9,126.09 km) |
| La Crescenta-Montrose to Oberschleissheim | 5,951.85 mi (9,578.58 km) |
| La Crescenta-Montrose to Oberstdorf | 5,957.97 mi (9,588.42 km) |
| La Crescenta-Montrose to Obertraubling | 5,930.98 mi (9,544.99 km) |
| La Crescenta-Montrose to Obertshausen | 5,776.20 mi (9,295.89 km) |
| La Crescenta-Montrose to Oberursel | 5,761.60 mi (9,272.40 km) |
| La Crescenta-Montrose to Ochsenfurt | 5,834.02 mi (9,388.95 km) |
| La Crescenta-Montrose to Ochsenhausen | 5,913.18 mi (9,516.35 km) |
| La Crescenta-Montrose to Ochtrup | 5,618.94 mi (9,042.81 km) |
| La Crescenta-Montrose to Odenthal | 5,676.10 mi (9,134.80 km) |
| La Crescenta-Montrose to Oelde | 5,665.50 mi (9,117.73 km) |
| La Crescenta-Montrose to Oelsnitz | 5,853.27 mi (9,419.92 km) |
| La Crescenta-Montrose to Oer-Erkenschwick | 5,649.21 mi (9,091.52 km) |
