| Upper Arlington to Nuth | 4,108.71 mi (6,612.32 km) |
| Upper Arlington to Oegstgeest | 4,015.20 mi (6,461.84 km) |
| Upper Arlington to Oirschot | 4,067.94 mi (6,546.72 km) |
| Upper Arlington to Oisterwijk | 4,061.52 mi (6,536.39 km) |
| Upper Arlington to Oldebroek | 4,061.47 mi (6,536.30 km) |
| Upper Arlington to Oldenzaal | 4,104.51 mi (6,605.58 km) |
| Upper Arlington to Ommen | 4,078.84 mi (6,564.27 km) |
| Upper Arlington to Oosterend | 4,050.72 mi (6,519.01 km) |
| Upper Arlington to Oosterhout | 4,046.50 mi (6,512.21 km) |
| Upper Arlington to Oosterwolde | 4,059.52 mi (6,533.16 km) |
| Upper Arlington to Oostzaan | 4,023.54 mi (6,475.26 km) |
| Upper Arlington to Opmeer | 4,018.05 mi (6,466.42 km) |
| Upper Arlington to Oss | 4,068.00 mi (6,546.81 km) |
| Upper Arlington to Oud-Beijerland | 4,023.67 mi (6,475.46 km) |
| Upper Arlington to Oudenbosch | 4,035.32 mi (6,494.22 km) |
