| Namsos to Oerlinghausen | 869.50 mi (1,399.32 km) |
| Namsos to Oestrich-Winkel | 1,007.62 mi (1,621.61 km) |
| Namsos to Offenburg | 1,113.33 mi (1,791.73 km) |
| Namsos to Oftersheim | 1,048.46 mi (1,687.34 km) |
| Namsos to Ohrdruf | 942.67 mi (1,517.08 km) |
| Namsos to Ohringen | 1,057.32 mi (1,701.59 km) |
| Namsos to Olbernhau | 955.74 mi (1,538.11 km) |
| Namsos to Olching | 1,123.86 mi (1,808.68 km) |
| Namsos to Oldenburg | 790.77 mi (1,272.62 km) |
| Namsos to Oldenburg in Holstein | 702.70 mi (1,130.89 km) |
| Namsos to Olfen | 893.13 mi (1,437.35 km) |
| Namsos to Olpe | 938.62 mi (1,510.56 km) |
| Namsos to Olsberg | 912.68 mi (1,468.81 km) |
| Namsos to Oranienburg | 811.51 mi (1,305.99 km) |
| Namsos to Ortenberg | 978.94 mi (1,575.45 km) |
