| The Dalles to Opwijk | 5,012.05 mi (8,066.12 km) |
| The Dalles to Ostend | 4,964.67 mi (7,989.86 km) |
| The Dalles to Oud-Heverlee | 5,032.01 mi (8,098.23 km) |
| The Dalles to Oud-Turnhout | 5,013.25 mi (8,068.05 km) |
| The Dalles to Oudenaarde | 5,003.24 mi (8,051.94 km) |
| The Dalles to Oudenburg | 4,969.12 mi (7,997.03 km) |
| The Dalles to Oupeye | 5,064.12 mi (8,149.91 km) |
| The Dalles to Overijse | 5,031.33 mi (8,097.14 km) |
| The Dalles to Overpelt | 5,029.89 mi (8,094.82 km) |
| The Dalles to Paal | 5,033.57 mi (8,100.75 km) |
| The Dalles to Peer | 5,035.52 mi (8,103.88 km) |
| The Dalles to Pepinster | 5,076.50 mi (8,169.84 km) |
| The Dalles to Peruwelz | 5,021.18 mi (8,080.82 km) |
| The Dalles to Perwez | 5,047.49 mi (8,123.16 km) |
| The Dalles to Philippeville | 5,064.19 mi (8,150.03 km) |
