| Richardson to Nuth | 4,982.57 mi (8,018.66 km) |
| Richardson to Oegstgeest | 4,886.12 mi (7,863.44 km) |
| Richardson to Oirschot | 4,940.41 mi (7,950.82 km) |
| Richardson to Oisterwijk | 4,933.81 mi (7,940.19 km) |
| Richardson to Oldebroek | 4,929.52 mi (7,933.29 km) |
| Richardson to Oldenzaal | 4,971.72 mi (8,001.20 km) |
| Richardson to Ommen | 4,945.94 mi (7,959.72 km) |
| Richardson to Oosterend | 4,916.30 mi (7,912.02 km) |
| Richardson to Oosterhout | 4,918.98 mi (7,916.34 km) |
| Richardson to Oosterwolde | 4,924.84 mi (7,925.77 km) |
| Richardson to Oostzaan | 4,892.96 mi (7,874.46 km) |
| Richardson to Opmeer | 4,886.32 mi (7,863.78 km) |
| Richardson to Oss | 4,939.20 mi (7,948.87 km) |
| Richardson to Oud-Beijerland | 4,896.06 mi (7,879.44 km) |
| Richardson to Oudenbosch | 4,908.41 mi (7,899.32 km) |
