| Hilo to Nuth | 7,423.09 mi (11,946.31 km) |
| Hilo to Oegstgeest | 7,320.34 mi (11,780.95 km) |
| Hilo to Oirschot | 7,376.76 mi (11,871.75 km) |
| Hilo to Oisterwijk | 7,369.91 mi (11,860.72 km) |
| Hilo to Oldebroek | 7,322.97 mi (11,785.18 km) |
| Hilo to Oldenzaal | 7,345.27 mi (11,821.07 km) |
| Hilo to Ommen | 7,325.44 mi (11,789.16 km) |
| Hilo to Oosterend | 7,288.90 mi (11,730.36 km) |
| Hilo to Oosterhout | 7,361.09 mi (11,846.54 km) |
| Hilo to Oosterwolde | 7,292.71 mi (11,736.49 km) |
| Hilo to Oostzaan | 7,310.05 mi (11,764.39 km) |
| Hilo to Opmeer | 7,293.62 mi (11,737.95 km) |
| Hilo to Oss | 7,362.40 mi (11,848.64 km) |
| Hilo to Oud-Beijerland | 7,343.16 mi (11,817.68 km) |
| Hilo to Oudenbosch | 7,359.75 mi (11,844.37 km) |
