| Triangle to Opwijk | 3,880.42 mi (6,244.93 km) |
| Triangle to Ostend | 3,822.80 mi (6,152.20 km) |
| Triangle to Oud-Heverlee | 3,903.40 mi (6,281.91 km) |
| Triangle to Oud-Turnhout | 3,903.81 mi (6,282.58 km) |
| Triangle to Oudenaarde | 3,859.65 mi (6,211.50 km) |
| Triangle to Oudenburg | 3,827.09 mi (6,159.11 km) |
| Triangle to Oupeye | 3,946.18 mi (6,350.76 km) |
| Triangle to Overijse | 3,899.26 mi (6,275.26 km) |
| Triangle to Overpelt | 3,923.78 mi (6,314.71 km) |
| Triangle to Paal | 3,918.55 mi (6,306.30 km) |
| Triangle to Peer | 3,927.43 mi (6,320.59 km) |
| Triangle to Pepinster | 3,956.95 mi (6,368.10 km) |
| Triangle to Peruwelz | 3,867.29 mi (6,223.80 km) |
| Triangle to Perwez | 3,914.80 mi (6,300.26 km) |
| Triangle to Philippeville | 3,914.97 mi (6,300.53 km) |
