| North Decatur to Oberkirch | 4,614.49 mi (7,426.30 km) |
| North Decatur to Obernburg am Main | 4,618.78 mi (7,433.20 km) |
| North Decatur to Obernkirchen | 4,546.78 mi (7,317.33 km) |
| North Decatur to Oberschleissheim | 4,766.20 mi (7,670.45 km) |
| North Decatur to Oberstdorf | 4,739.94 mi (7,628.19 km) |
| North Decatur to Obertraubling | 4,767.43 mi (7,672.43 km) |
| North Decatur to Obertshausen | 4,599.68 mi (7,402.47 km) |
| North Decatur to Oberursel | 4,585.39 mi (7,379.47 km) |
| North Decatur to Ochsenfurt | 4,661.67 mi (7,502.24 km) |
| North Decatur to Ochsenhausen | 4,705.47 mi (7,572.73 km) |
| North Decatur to Ochtrup | 4,473.95 mi (7,200.12 km) |
| North Decatur to Odenthal | 4,503.40 mi (7,247.52 km) |
| North Decatur to Oelde | 4,521.65 mi (7,276.90 km) |
| North Decatur to Oelsnitz | 4,721.02 mi (7,597.74 km) |
| North Decatur to Oer-Erkenschwick | 4,491.81 mi (7,228.86 km) |
