| Smithville to Nuth | 4,571.26 mi (7,356.73 km) |
| Smithville to Oegstgeest | 4,472.47 mi (7,197.74 km) |
| Smithville to Oirschot | 4,527.95 mi (7,287.04 km) |
| Smithville to Oisterwijk | 4,521.21 mi (7,276.18 km) |
| Smithville to Oldebroek | 4,513.33 mi (7,263.51 km) |
| Smithville to Oldenzaal | 4,554.73 mi (7,330.13 km) |
| Smithville to Ommen | 4,528.95 mi (7,288.64 km) |
| Smithville to Oosterend | 4,498.22 mi (7,239.19 km) |
| Smithville to Oosterhout | 4,506.61 mi (7,252.69 km) |
| Smithville to Oosterwolde | 4,506.55 mi (7,252.60 km) |
| Smithville to Oostzaan | 4,478.02 mi (7,206.68 km) |
| Smithville to Opmeer | 4,470.46 mi (7,194.51 km) |
| Smithville to Oss | 4,525.62 mi (7,283.29 km) |
| Smithville to Oud-Beijerland | 4,483.68 mi (7,215.78 km) |
| Smithville to Oudenbosch | 4,496.62 mi (7,236.61 km) |
