| Rockville Centre to Nuth | 3,706.53 mi (5,965.08 km) |
| Rockville Centre to Oegstgeest | 3,618.05 mi (5,822.69 km) |
| Rockville Centre to Oirschot | 3,668.13 mi (5,903.28 km) |
| Rockville Centre to Oisterwijk | 3,662.03 mi (5,893.47 km) |
| Rockville Centre to Oldebroek | 3,668.13 mi (5,903.29 km) |
| Rockville Centre to Oldenzaal | 3,712.06 mi (5,973.98 km) |
| Rockville Centre to Ommen | 3,686.73 mi (5,933.21 km) |
| Rockville Centre to Oosterend | 3,660.95 mi (5,891.73 km) |
| Rockville Centre to Oosterhout | 3,646.81 mi (5,868.97 km) |
| Rockville Centre to Oosterwolde | 3,670.02 mi (5,906.32 km) |
| Rockville Centre to Oostzaan | 3,628.51 mi (5,839.52 km) |
| Rockville Centre to Opmeer | 3,624.71 mi (5,833.41 km) |
| Rockville Centre to Oss | 3,670.06 mi (5,906.40 km) |
| Rockville Centre to Oud-Beijerland | 3,624.27 mi (5,832.70 km) |
| Rockville Centre to Oudenbosch | 3,634.80 mi (5,849.64 km) |
