| Viareggio to Opwijk | 566.19 mi (911.20 km) |
| Viareggio to Ostend | 612.03 mi (984.96 km) |
| Viareggio to Oud-Heverlee | 547.33 mi (880.85 km) |
| Viareggio to Oud-Turnhout | 569.87 mi (917.12 km) |
| Viareggio to Oudenaarde | 573.64 mi (923.18 km) |
| Viareggio to Oudenburg | 607.59 mi (977.82 km) |
| Viareggio to Oupeye | 519.41 mi (835.91 km) |
| Viareggio to Overijse | 547.37 mi (880.91 km) |
| Viareggio to Overpelt | 555.30 mi (893.67 km) |
| Viareggio to Paal | 549.07 mi (883.65 km) |
| Viareggio to Peer | 549.39 mi (884.15 km) |
| Viareggio to Pepinster | 507.28 mi (816.39 km) |
| Viareggio to Peruwelz | 555.45 mi (893.91 km) |
| Viareggio to Perwez | 531.59 mi (855.51 km) |
| Viareggio to Philippeville | 512.99 mi (825.58 km) |
