| North Adams to Opwijk | 3,528.43 mi (5,678.46 km) |
| North Adams to Ostend | 3,470.90 mi (5,585.87 km) |
| North Adams to Oud-Heverlee | 3,551.42 mi (5,715.46 km) |
| North Adams to Oud-Turnhout | 3,550.96 mi (5,714.73 km) |
| North Adams to Oudenaarde | 3,508.09 mi (5,645.72 km) |
| North Adams to Oudenburg | 3,475.23 mi (5,592.85 km) |
| North Adams to Oupeye | 3,593.99 mi (5,783.97 km) |
| North Adams to Overijse | 3,547.42 mi (5,709.03 km) |
| North Adams to Overpelt | 3,570.91 mi (5,746.82 km) |
| North Adams to Paal | 3,566.05 mi (5,739.01 km) |
| North Adams to Peer | 3,574.68 mi (5,752.88 km) |
| North Adams to Pepinster | 3,604.91 mi (5,801.55 km) |
| North Adams to Peruwelz | 3,516.29 mi (5,658.92 km) |
| North Adams to Perwez | 3,563.09 mi (5,734.25 km) |
| North Adams to Philippeville | 3,564.07 mi (5,735.82 km) |
