| Sarpsborg to Opwijk | 635.85 mi (1,023.30 km) |
| Sarpsborg to Ostend | 642.52 mi (1,034.04 km) |
| Sarpsborg to Oud-Heverlee | 636.57 mi (1,024.47 km) |
| Sarpsborg to Oud-Turnhout | 600.47 mi (966.36 km) |
| Sarpsborg to Oudenaarde | 653.31 mi (1,051.41 km) |
| Sarpsborg to Oudenburg | 643.59 mi (1,035.75 km) |
| Sarpsborg to Oupeye | 630.52 mi (1,014.73 km) |
| Sarpsborg to Overijse | 641.90 mi (1,033.03 km) |
| Sarpsborg to Overpelt | 600.42 mi (966.28 km) |
| Sarpsborg to Paal | 615.54 mi (990.61 km) |
| Sarpsborg to Peer | 605.35 mi (974.22 km) |
| Sarpsborg to Pepinster | 637.57 mi (1,026.07 km) |
| Sarpsborg to Peruwelz | 674.71 mi (1,085.84 km) |
| Sarpsborg to Perwez | 647.83 mi (1,042.59 km) |
| Sarpsborg to Philippeville | 679.36 mi (1,093.32 km) |
