| Westphalia to Nuth | 3,917.45 mi (6,304.52 km) |
| Westphalia to Oegstgeest | 3,828.67 mi (6,161.65 km) |
| Westphalia to Oirschot | 3,878.91 mi (6,242.51 km) |
| Westphalia to Oisterwijk | 3,872.80 mi (6,232.67 km) |
| Westphalia to Oldebroek | 3,878.52 mi (6,241.87 km) |
| Westphalia to Oldenzaal | 3,922.39 mi (6,312.48 km) |
| Westphalia to Ommen | 3,897.03 mi (6,271.66 km) |
| Westphalia to Oosterend | 3,871.07 mi (6,229.88 km) |
| Westphalia to Oosterhout | 3,857.59 mi (6,208.18 km) |
| Westphalia to Oosterwolde | 3,880.12 mi (6,244.45 km) |
| Westphalia to Oostzaan | 3,839.00 mi (6,178.27 km) |
| Westphalia to Opmeer | 3,835.08 mi (6,171.97 km) |
| Westphalia to Oss | 3,880.74 mi (6,245.46 km) |
| Westphalia to Oud-Beijerland | 3,835.02 mi (6,171.88 km) |
| Westphalia to Oudenbosch | 3,845.62 mi (6,188.92 km) |
