| Trondheim to Opwijk | 890.92 mi (1,433.80 km) |
| Trondheim to Ostend | 886.67 mi (1,426.96 km) |
| Trondheim to Oud-Heverlee | 895.56 mi (1,441.26 km) |
| Trondheim to Oud-Turnhout | 860.10 mi (1,384.21 km) |
| Trondheim to Oudenaarde | 904.50 mi (1,455.66 km) |
| Trondheim to Oudenburg | 888.60 mi (1,430.06 km) |
| Trondheim to Oupeye | 896.29 mi (1,442.43 km) |
| Trondheim to Overijse | 900.11 mi (1,448.59 km) |
| Trondheim to Overpelt | 863.38 mi (1,389.47 km) |
| Trondheim to Paal | 877.37 mi (1,411.98 km) |
| Trondheim to Peer | 868.80 mi (1,398.20 km) |
| Trondheim to Pepinster | 904.72 mi (1,456.00 km) |
| Trondheim to Peruwelz | 927.08 mi (1,491.99 km) |
| Trondheim to Perwez | 908.47 mi (1,462.04 km) |
| Trondheim to Philippeville | 939.47 mi (1,511.93 km) |
