| Front Royal to Nuth | 3,967.63 mi (6,385.29 km) |
| Front Royal to Oegstgeest | 3,877.91 mi (6,240.89 km) |
| Front Royal to Oirschot | 3,928.65 mi (6,322.56 km) |
| Front Royal to Oisterwijk | 3,922.48 mi (6,312.62 km) |
| Front Royal to Oldebroek | 3,927.10 mi (6,320.06 km) |
| Front Royal to Oldenzaal | 3,970.84 mi (6,390.46 km) |
| Front Royal to Ommen | 3,945.41 mi (6,349.52 km) |
| Front Royal to Oosterend | 3,919.02 mi (6,307.06 km) |
| Front Royal to Oosterhout | 3,907.29 mi (6,288.18 km) |
| Front Royal to Oosterwolde | 3,928.03 mi (6,321.55 km) |
| Front Royal to Oostzaan | 3,887.86 mi (6,256.91 km) |
| Front Royal to Opmeer | 3,883.65 mi (6,250.12 km) |
| Front Royal to Oss | 3,930.15 mi (6,324.97 km) |
| Front Royal to Oud-Beijerland | 3,884.67 mi (6,251.77 km) |
| Front Royal to Oudenbosch | 3,895.47 mi (6,269.15 km) |
