| West Carson to Nuth | 5,670.91 mi (9,126.45 km) |
| West Carson to Oegstgeest | 5,565.84 mi (8,957.36 km) |
| West Carson to Oirschot | 5,624.41 mi (9,051.62 km) |
| West Carson to Oisterwijk | 5,617.30 mi (9,040.17 km) |
| West Carson to Oldebroek | 5,595.22 mi (9,004.64 km) |
| West Carson to Oldenzaal | 5,631.99 mi (9,063.81 km) |
| West Carson to Ommen | 5,606.98 mi (9,023.56 km) |
| West Carson to Oosterend | 5,572.57 mi (8,968.19 km) |
| West Carson to Oosterhout | 5,604.02 mi (9,018.79 km) |
| West Carson to Oosterwolde | 5,579.73 mi (8,979.71 km) |
| West Carson to Oostzaan | 5,566.06 mi (8,957.70 km) |
| West Carson to Opmeer | 5,554.96 mi (8,939.84 km) |
| West Carson to Oss | 5,617.74 mi (9,040.87 km) |
| West Carson to Oud-Beijerland | 5,581.72 mi (8,982.90 km) |
| West Carson to Oudenbosch | 5,596.58 mi (9,006.82 km) |
