| Gelves to Opwijk | 1,066.80 mi (1,716.85 km) |
| Gelves to Ostend | 1,054.93 mi (1,697.74 km) |
| Gelves to Oud-Heverlee | 1,070.43 mi (1,722.69 km) |
| Gelves to Oud-Turnhout | 1,105.87 mi (1,779.73 km) |
| Gelves to Oudenaarde | 1,046.73 mi (1,684.54 km) |
| Gelves to Oudenburg | 1,053.98 mi (1,696.22 km) |
| Gelves to Oupeye | 1,087.76 mi (1,750.58 km) |
| Gelves to Overijse | 1,064.34 mi (1,712.89 km) |
| Gelves to Overpelt | 1,110.64 mi (1,787.40 km) |
| Gelves to Paal | 1,094.54 mi (1,761.49 km) |
| Gelves to Peer | 1,106.79 mi (1,781.21 km) |
| Gelves to Pepinster | 1,084.46 mi (1,745.27 km) |
| Gelves to Peruwelz | 1,026.58 mi (1,652.12 km) |
| Gelves to Perwez | 1,062.05 mi (1,709.20 km) |
| Gelves to Philippeville | 1,031.28 mi (1,659.68 km) |
