| Thermi to Opwijk | 1,152.80 mi (1,855.25 km) |
| Thermi to Ostend | 1,209.14 mi (1,945.92 km) |
| Thermi to Oud-Heverlee | 1,130.03 mi (1,818.61 km) |
| Thermi to Oud-Turnhout | 1,136.59 mi (1,829.17 km) |
| Thermi to Oudenaarde | 1,170.57 mi (1,883.85 km) |
| Thermi to Oudenburg | 1,204.65 mi (1,938.70 km) |
| Thermi to Oupeye | 1,089.44 mi (1,753.28 km) |
| Thermi to Overijse | 1,133.18 mi (1,823.67 km) |
| Thermi to Overpelt | 1,117.21 mi (1,797.97 km) |
| Thermi to Paal | 1,119.14 mi (1,801.08 km) |
| Thermi to Peer | 1,112.62 mi (1,790.59 km) |
| Thermi to Pepinster | 1,077.70 mi (1,734.40 km) |
| Thermi to Peruwelz | 1,159.90 mi (1,866.67 km) |
| Thermi to Perwez | 1,116.92 mi (1,797.51 km) |
| Thermi to Philippeville | 1,112.03 mi (1,789.64 km) |
