| Namsos to Oberkirch | 1,108.10 mi (1,783.31 km) |
| Namsos to Obernburg am Main | 1,014.21 mi (1,632.21 km) |
| Namsos to Obernkirchen | 847.14 mi (1,363.33 km) |
| Namsos to Oberschleissheim | 1,120.39 mi (1,803.10 km) |
| Namsos to Oberstdorf | 1,179.34 mi (1,897.96 km) |
| Namsos to Obertraubling | 1,071.22 mi (1,723.96 km) |
| Namsos to Obertshausen | 999.62 mi (1,608.73 km) |
| Namsos to Oberursel | 991.17 mi (1,595.14 km) |
| Namsos to Ochsenfurt | 1,025.01 mi (1,649.59 km) |
| Namsos to Ochsenhausen | 1,134.15 mi (1,825.24 km) |
| Namsos to Ochtrup | 860.88 mi (1,385.46 km) |
| Namsos to Odenthal | 941.49 mi (1,515.17 km) |
| Namsos to Oelde | 881.00 mi (1,417.83 km) |
| Namsos to Oelsnitz | 970.99 mi (1,562.66 km) |
| Namsos to Oer-Erkenschwick | 899.02 mi (1,446.83 km) |
