| Altus to Nuth | 4,989.22 mi (8,029.38 km) |
| Altus to Oegstgeest | 4,890.61 mi (7,870.68 km) |
| Altus to Oirschot | 4,946.01 mi (7,959.84 km) |
| Altus to Oisterwijk | 4,939.28 mi (7,949.00 km) |
| Altus to Oldebroek | 4,931.63 mi (7,936.69 km) |
| Altus to Oldenzaal | 4,973.06 mi (8,003.37 km) |
| Altus to Ommen | 4,947.28 mi (7,961.88 km) |
| Altus to Oosterend | 4,916.58 mi (7,912.48 km) |
| Altus to Oosterhout | 4,924.66 mi (7,925.48 km) |
| Altus to Oosterwolde | 4,924.92 mi (7,925.89 km) |
| Altus to Oostzaan | 4,896.25 mi (7,879.75 km) |
| Altus to Opmeer | 4,888.74 mi (7,867.66 km) |
| Altus to Oss | 4,943.77 mi (7,956.22 km) |
| Altus to Oud-Beijerland | 4,901.72 mi (7,888.56 km) |
| Altus to Oudenbosch | 4,914.62 mi (7,909.31 km) |
