| Aiken to Nuth | 4,367.55 mi (7,028.90 km) |
| Aiken to Oegstgeest | 4,280.10 mi (6,888.15 km) |
| Aiken to Oirschot | 4,329.66 mi (6,967.91 km) |
| Aiken to Oisterwijk | 4,323.63 mi (6,958.20 km) |
| Aiken to Oldebroek | 4,330.72 mi (6,969.61 km) |
| Aiken to Oldenzaal | 4,374.73 mi (7,040.44 km) |
| Aiken to Ommen | 4,349.46 mi (6,999.78 km) |
| Aiken to Oosterend | 4,323.98 mi (6,958.77 km) |
| Aiken to Oosterhout | 4,308.38 mi (6,933.67 km) |
| Aiken to Oosterwolde | 4,333.07 mi (6,973.41 km) |
| Aiken to Oostzaan | 4,290.88 mi (6,905.50 km) |
| Aiken to Opmeer | 4,287.32 mi (6,899.78 km) |
| Aiken to Oss | 4,331.93 mi (6,971.57 km) |
| Aiken to Oud-Beijerland | 4,285.92 mi (6,897.52 km) |
| Aiken to Oudenbosch | 4,296.23 mi (6,914.11 km) |
