| Kas to Opwijk | 1,617.82 mi (2,603.64 km) |
| Kas to Ostend | 1,674.55 mi (2,694.93 km) |
| Kas to Oud-Heverlee | 1,594.95 mi (2,566.83 km) |
| Kas to Oud-Turnhout | 1,600.01 mi (2,574.96 km) |
| Kas to Oudenaarde | 1,636.25 mi (2,633.29 km) |
| Kas to Oudenburg | 1,670.09 mi (2,687.76 km) |
| Kas to Oupeye | 1,553.76 mi (2,500.53 km) |
| Kas to Overijse | 1,598.32 mi (2,572.24 km) |
| Kas to Overpelt | 1,580.41 mi (2,543.43 km) |
| Kas to Paal | 1,583.09 mi (2,547.74 km) |
| Kas to Peer | 1,576.02 mi (2,536.35 km) |
| Kas to Pepinster | 1,542.20 mi (2,481.94 km) |
| Kas to Peruwelz | 1,626.16 mi (2,617.05 km) |
| Kas to Perwez | 1,582.18 mi (2,546.26 km) |
| Kas to Philippeville | 1,578.26 mi (2,539.97 km) |
