| North Branch to Oberkirch | 4,389.59 mi (7,064.36 km) |
| North Branch to Obernburg am Main | 4,368.44 mi (7,030.33 km) |
| North Branch to Obernkirchen | 4,261.27 mi (6,857.86 km) |
| North Branch to Oberschleissheim | 4,523.36 mi (7,279.65 km) |
| North Branch to Oberstdorf | 4,517.22 mi (7,269.77 km) |
| North Branch to Obertraubling | 4,510.81 mi (7,259.45 km) |
| North Branch to Obertshausen | 4,347.90 mi (6,997.26 km) |
| North Branch to Oberursel | 4,333.13 mi (6,973.50 km) |
| North Branch to Ochsenfurt | 4,408.48 mi (7,094.76 km) |
| North Branch to Ochsenhausen | 4,475.51 mi (7,202.63 km) |
| North Branch to Ochtrup | 4,199.90 mi (6,759.09 km) |
| North Branch to Odenthal | 4,247.31 mi (6,835.38 km) |
| North Branch to Oelde | 4,247.88 mi (6,836.31 km) |
| North Branch to Oelsnitz | 4,444.23 mi (7,152.29 km) |
| North Branch to Oer-Erkenschwick | 4,225.86 mi (6,800.87 km) |
