| Grantsville to Opwijk | 5,048.87 mi (8,125.37 km) |
| Grantsville to Ostend | 4,997.16 mi (8,042.16 km) |
| Grantsville to Oud-Heverlee | 5,070.28 mi (8,159.83 km) |
| Grantsville to Oud-Turnhout | 5,056.25 mi (8,137.25 km) |
| Grantsville to Oudenaarde | 5,036.46 mi (8,105.40 km) |
| Grantsville to Oudenburg | 5,001.71 mi (8,049.48 km) |
| Grantsville to Oupeye | 5,106.35 mi (8,217.87 km) |
| Grantsville to Overijse | 5,068.62 mi (8,157.16 km) |
| Grantsville to Overpelt | 5,074.32 mi (8,166.33 km) |
| Grantsville to Paal | 5,075.66 mi (8,168.49 km) |
| Grantsville to Peer | 5,079.58 mi (8,174.80 km) |
| Grantsville to Pepinster | 5,118.66 mi (8,237.70 km) |
| Grantsville to Peruwelz | 5,052.09 mi (8,130.55 km) |
| Grantsville to Perwez | 5,085.11 mi (8,183.70 km) |
| Grantsville to Philippeville | 5,097.72 mi (8,203.99 km) |
