| Gulbene to Opwijk | 1,004.08 mi (1,615.91 km) |
| Gulbene to Ostend | 1,040.15 mi (1,673.96 km) |
| Gulbene to Oud-Heverlee | 991.89 mi (1,596.29 km) |
| Gulbene to Oud-Turnhout | 961.81 mi (1,547.89 km) |
| Gulbene to Oudenaarde | 1,029.66 mi (1,657.08 km) |
| Gulbene to Oudenburg | 1,038.79 mi (1,671.77 km) |
| Gulbene to Oupeye | 962.02 mi (1,548.22 km) |
| Gulbene to Overijse | 998.64 mi (1,607.16 km) |
| Gulbene to Overpelt | 950.03 mi (1,528.93 km) |
| Gulbene to Paal | 965.67 mi (1,554.10 km) |
| Gulbene to Peer | 951.96 mi (1,532.03 km) |
| Gulbene to Pepinster | 961.63 mi (1,547.59 km) |
| Gulbene to Peruwelz | 1,043.31 mi (1,679.05 km) |
| Gulbene to Perwez | 994.89 mi (1,601.12 km) |
| Gulbene to Philippeville | 1,021.56 mi (1,644.05 km) |
