| Guardiagrele to Opwijk | 769.21 mi (1,237.92 km) |
| Guardiagrele to Ostend | 819.91 mi (1,319.52 km) |
| Guardiagrele to Oud-Heverlee | 748.36 mi (1,204.37 km) |
| Guardiagrele to Oud-Turnhout | 765.38 mi (1,231.76 km) |
| Guardiagrele to Oudenaarde | 780.66 mi (1,256.36 km) |
| Guardiagrele to Oudenburg | 815.37 mi (1,312.21 km) |
| Guardiagrele to Oupeye | 714.60 mi (1,150.04 km) |
| Guardiagrele to Overijse | 749.59 mi (1,206.36 km) |
| Guardiagrele to Overpelt | 748.46 mi (1,204.53 km) |
| Guardiagrele to Paal | 745.25 mi (1,199.36 km) |
| Guardiagrele to Peer | 742.88 mi (1,195.54 km) |
| Guardiagrele to Pepinster | 702.21 mi (1,130.09 km) |
| Guardiagrele to Peruwelz | 764.83 mi (1,230.88 km) |
| Guardiagrele to Perwez | 733.20 mi (1,179.96 km) |
| Guardiagrele to Philippeville | 719.37 mi (1,157.71 km) |
