| Federal Way to Nuth | 4,986.93 mi (8,025.68 km) |
| Federal Way to Oegstgeest | 4,880.34 mi (7,854.14 km) |
| Federal Way to Oirschot | 4,939.40 mi (7,949.20 km) |
| Federal Way to Oisterwijk | 4,932.23 mi (7,937.65 km) |
| Federal Way to Oldebroek | 4,899.67 mi (7,885.25 km) |
| Federal Way to Oldenzaal | 4,931.66 mi (7,936.73 km) |
| Federal Way to Ommen | 4,908.06 mi (7,898.76 km) |
| Federal Way to Oosterend | 4,872.00 mi (7,840.72 km) |
| Federal Way to Oosterhout | 4,920.45 mi (7,918.71 km) |
| Federal Way to Oosterwolde | 4,878.02 mi (7,850.41 km) |
| Federal Way to Oostzaan | 4,876.29 mi (7,847.64 km) |
| Federal Way to Opmeer | 4,862.79 mi (7,825.90 km) |
| Federal Way to Oss | 4,929.47 mi (7,933.21 km) |
| Federal Way to Oud-Beijerland | 4,899.42 mi (7,884.86 km) |
| Federal Way to Oudenbosch | 4,915.34 mi (7,910.47 km) |
