| Fort Campbell North to Oerlinghausen | 4,513.71 mi (7,264.12 km) |
| Fort Campbell North to Oestrich-Winkel | 4,553.80 mi (7,328.63 km) |
| Fort Campbell North to Offenburg | 4,602.97 mi (7,407.76 km) |
| Fort Campbell North to Oftersheim | 4,597.87 mi (7,399.56 km) |
| Fort Campbell North to Ohrdruf | 4,629.98 mi (7,451.23 km) |
| Fort Campbell North to Ohringen | 4,639.51 mi (7,466.57 km) |
| Fort Campbell North to Olbernhau | 4,732.93 mi (7,616.92 km) |
| Fort Campbell North to Olching | 4,746.09 mi (7,638.09 km) |
| Fort Campbell North to Oldenburg | 4,458.46 mi (7,175.20 km) |
| Fort Campbell North to Oldenburg in Holstein | 4,516.24 mi (7,268.18 km) |
| Fort Campbell North to Olfen | 4,473.64 mi (7,199.63 km) |
| Fort Campbell North to Olpe | 4,513.60 mi (7,263.94 km) |
| Fort Campbell North to Olsberg | 4,527.28 mi (7,285.96 km) |
| Fort Campbell North to Oranienburg | 4,653.54 mi (7,489.14 km) |
| Fort Campbell North to Ortenberg | 4,582.53 mi (7,374.86 km) |
