| Grand Haven to Opwijk | 4,020.69 mi (6,470.68 km) |
| Grand Haven to Ostend | 3,964.31 mi (6,379.93 km) |
| Grand Haven to Oud-Heverlee | 4,043.50 mi (6,507.39 km) |
| Grand Haven to Oud-Turnhout | 4,038.07 mi (6,498.64 km) |
| Grand Haven to Oudenaarde | 4,002.91 mi (6,442.07 km) |
| Grand Haven to Oudenburg | 3,968.79 mi (6,387.16 km) |
| Grand Haven to Oupeye | 4,084.43 mi (6,573.25 km) |
| Grand Haven to Overijse | 4,040.29 mi (6,502.22 km) |
| Grand Haven to Overpelt | 4,057.68 mi (6,530.20 km) |
| Grand Haven to Paal | 4,055.00 mi (6,525.90 km) |
| Grand Haven to Peer | 4,062.06 mi (6,537.25 km) |
| Grand Haven to Pepinster | 4,096.05 mi (6,591.95 km) |
| Grand Haven to Peruwelz | 4,013.98 mi (6,459.87 km) |
| Grand Haven to Perwez | 4,056.53 mi (6,528.36 km) |
| Grand Haven to Philippeville | 4,061.78 mi (6,536.80 km) |
