| Fort Meade to Nuth | 3,901.60 mi (6,279.02 km) |
| Fort Meade to Oegstgeest | 3,812.63 mi (6,135.84 km) |
| Fort Meade to Oirschot | 3,862.98 mi (6,216.86 km) |
| Fort Meade to Oisterwijk | 3,856.85 mi (6,207.00 km) |
| Fort Meade to Oldebroek | 3,862.35 mi (6,215.85 km) |
| Fort Meade to Oldenzaal | 3,906.20 mi (6,286.42 km) |
| Fort Meade to Ommen | 3,880.82 mi (6,245.58 km) |
| Fort Meade to Oosterend | 3,854.78 mi (6,203.67 km) |
| Fort Meade to Oosterhout | 3,841.64 mi (6,182.53 km) |
| Fort Meade to Oosterwolde | 3,863.83 mi (6,218.23 km) |
| Fort Meade to Oostzaan | 3,822.89 mi (6,152.34 km) |
| Fort Meade to Opmeer | 3,818.91 mi (6,145.94 km) |
| Fort Meade to Oss | 3,864.74 mi (6,219.70 km) |
| Fort Meade to Oud-Beijerland | 3,819.07 mi (6,146.19 km) |
| Fort Meade to Oudenbosch | 3,829.70 mi (6,163.31 km) |
