| Hudiksvall to Opwijk | 890.08 mi (1,432.45 km) |
| Hudiksvall to Ostend | 901.68 mi (1,451.12 km) |
| Hudiksvall to Oud-Heverlee | 888.39 mi (1,429.73 km) |
| Hudiksvall to Oud-Turnhout | 852.42 mi (1,371.84 km) |
| Hudiksvall to Oudenaarde | 909.37 mi (1,463.49 km) |
| Hudiksvall to Oudenburg | 902.41 mi (1,452.29 km) |
| Hudiksvall to Oupeye | 877.19 mi (1,411.71 km) |
| Hudiksvall to Overijse | 894.14 mi (1,438.97 km) |
| Hudiksvall to Overpelt | 849.97 mi (1,367.90 km) |
| Hudiksvall to Paal | 865.69 mi (1,393.19 km) |
| Hudiksvall to Peer | 854.44 mi (1,375.08 km) |
| Hudiksvall to Pepinster | 882.83 mi (1,420.77 km) |
| Hudiksvall to Peruwelz | 929.91 mi (1,496.55 km) |
| Hudiksvall to Perwez | 898.33 mi (1,445.72 km) |
| Hudiksvall to Philippeville | 929.76 mi (1,496.31 km) |
