| Fort Carson to Nuth | 4,962.72 mi (7,986.73 km) |
| Fort Carson to Oegstgeest | 4,860.27 mi (7,821.85 km) |
| Fort Carson to Oirschot | 4,917.60 mi (7,914.11 km) |
| Fort Carson to Oisterwijk | 4,910.63 mi (7,902.90 km) |
| Fort Carson to Oldebroek | 4,895.76 mi (7,878.97 km) |
| Fort Carson to Oldenzaal | 4,935.15 mi (7,942.36 km) |
| Fort Carson to Ommen | 4,909.59 mi (7,901.22 km) |
| Fort Carson to Oosterend | 4,876.88 mi (7,848.58 km) |
| Fort Carson to Oosterhout | 4,896.60 mi (7,880.31 km) |
| Fort Carson to Oosterwolde | 4,884.69 mi (7,861.15 km) |
| Fort Carson to Oostzaan | 4,863.24 mi (7,826.63 km) |
| Fort Carson to Opmeer | 4,853.90 mi (7,811.60 km) |
| Fort Carson to Oss | 4,913.12 mi (7,906.91 km) |
| Fort Carson to Oud-Beijerland | 4,873.84 mi (7,843.69 km) |
| Fort Carson to Oudenbosch | 4,887.80 mi (7,866.16 km) |
