| Cities | Distance |
|---|---|
| Gap to Opwijk | 451.33 mi (726.34 km) |
| Gap to Ostend | 483.18 mi (777.60 km) |
| Gap to Oud-Heverlee | 438.41 mi (705.55 km) |
| Gap to Oud-Turnhout | 469.61 mi (755.77 km) |
| Gap to Oudenaarde | 449.59 mi (723.54 km) |
| Gap to Oudenburg | 479.28 mi (771.33 km) |
| Gap to Oupeye | 425.33 mi (684.50 km) |
| Gap to Overijse | 435.97 mi (701.63 km) |
| Gap to Overpelt | 460.99 mi (741.89 km) |
| Gap to Paal | 449.67 mi (723.67 km) |
| Gap to Peer | 455.10 mi (732.41 km) |
| Gap to Pepinster | 415.24 mi (668.27 km) |
| Gap to Peruwelz | 427.68 mi (688.29 km) |
| Gap to Perwez | 423.13 mi (680.96 km) |
| Gap to Philippeville | 396.21 mi (637.64 km) |