| Rheinfelden to Opwijk | 286.85 mi (461.64 km) |
| Rheinfelden to Ostend | 335.54 mi (539.99 km) |
| Rheinfelden to Oud-Heverlee | 267.30 mi (430.18 km) |
| Rheinfelden to Oud-Turnhout | 289.34 mi (465.65 km) |
| Rheinfelden to Oudenaarde | 296.45 mi (477.09 km) |
| Rheinfelden to Oudenburg | 331.01 mi (532.71 km) |
| Rheinfelden to Oupeye | 238.99 mi (384.62 km) |
| Rheinfelden to Overijse | 267.68 mi (430.80 km) |
| Rheinfelden to Overpelt | 275.05 mi (442.66 km) |
| Rheinfelden to Paal | 268.53 mi (432.17 km) |
| Rheinfelden to Peer | 269.11 mi (433.08 km) |
| Rheinfelden to Pepinster | 226.93 mi (365.21 km) |
| Rheinfelden to Peruwelz | 280.09 mi (450.77 km) |
| Rheinfelden to Perwez | 251.66 mi (405.01 km) |
| Rheinfelden to Philippeville | 235.19 mi (378.50 km) |
