| Red Bluff to Oberkirch | 5,598.38 mi (9,009.72 km) |
| Red Bluff to Obernburg am Main | 5,553.18 mi (8,936.98 km) |
| Red Bluff to Obernkirchen | 5,416.43 mi (8,716.90 km) |
| Red Bluff to Oberschleissheim | 5,706.00 mi (9,182.92 km) |
| Red Bluff to Oberstdorf | 5,720.47 mi (9,206.20 km) |
| Red Bluff to Obertraubling | 5,679.98 mi (9,141.05 km) |
| Red Bluff to Obertshausen | 5,532.47 mi (8,903.65 km) |
| Red Bluff to Oberursel | 5,518.17 mi (8,880.63 km) |
| Red Bluff to Ochsenfurt | 5,587.74 mi (8,992.59 km) |
| Red Bluff to Ochsenhausen | 5,674.08 mi (9,131.55 km) |
| Red Bluff to Ochtrup | 5,371.30 mi (8,644.26 km) |
| Red Bluff to Odenthal | 5,433.99 mi (8,745.16 km) |
| Red Bluff to Oelde | 5,416.34 mi (8,716.75 km) |
| Red Bluff to Oelsnitz | 5,596.37 mi (9,006.49 km) |
| Red Bluff to Oer-Erkenschwick | 5,403.90 mi (8,696.74 km) |
