| Cities | Distance |
|---|---|
| Roubaix to Opwijk | 47.71 mi (76.78 km) |
| Roubaix to Ostend | 38.73 mi (62.34 km) |
| Roubaix to Oud-Heverlee | 65.65 mi (105.65 km) |
| Roubaix to Oud-Turnhout | 89.50 mi (144.03 km) |
| Roubaix to Oudenaarde | 21.36 mi (34.37 km) |
| Roubaix to Oudenburg | 34.98 mi (56.30 km) |
| Roubaix to Oupeye | 107.72 mi (173.36 km) |
| Roubaix to Overijse | 59.45 mi (95.68 km) |
| Roubaix to Overpelt | 103.86 mi (167.14 km) |
| Roubaix to Paal | 90.11 mi (145.02 km) |
| Roubaix to Peer | 103.59 mi (166.71 km) |
| Roubaix to Pepinster | 115.80 mi (186.36 km) |
| Roubaix to Peruwelz | 21.30 mi (34.28 km) |
| Roubaix to Perwez | 71.69 mi (115.37 km) |
| Roubaix to Philippeville | 69.07 mi (111.16 km) |