| Sundsvall to Oerlinghausen | 788.70 mi (1,269.28 km) |
| Sundsvall to Oestrich-Winkel | 926.40 mi (1,490.89 km) |
| Sundsvall to Offenburg | 1,028.10 mi (1,654.57 km) |
| Sundsvall to Oftersheim | 959.72 mi (1,544.51 km) |
| Sundsvall to Ohrdruf | 836.77 mi (1,346.66 km) |
| Sundsvall to Ohringen | 959.58 mi (1,544.29 km) |
| Sundsvall to Olbernhau | 824.39 mi (1,326.72 km) |
| Sundsvall to Olching | 1,008.06 mi (1,622.32 km) |
| Sundsvall to Oldenburg | 720.58 mi (1,159.67 km) |
| Sundsvall to Oldenburg in Holstein | 605.61 mi (974.64 km) |
| Sundsvall to Olfen | 824.99 mi (1,327.69 km) |
| Sundsvall to Olpe | 862.76 mi (1,388.48 km) |
| Sundsvall to Olsberg | 831.39 mi (1,337.99 km) |
| Sundsvall to Oranienburg | 683.03 mi (1,099.23 km) |
| Sundsvall to Ortenberg | 888.49 mi (1,429.89 km) |
