| Muscle Shoals to Oerlinghausen | 4,618.12 mi (7,432.14 km) |
| Muscle Shoals to Oestrich-Winkel | 4,655.10 mi (7,491.67 km) |
| Muscle Shoals to Offenburg | 4,702.01 mi (7,567.15 km) |
| Muscle Shoals to Oftersheim | 4,698.57 mi (7,561.62 km) |
| Muscle Shoals to Ohrdruf | 4,733.79 mi (7,618.30 km) |
| Muscle Shoals to Ohringen | 4,740.44 mi (7,629.00 km) |
| Muscle Shoals to Olbernhau | 4,837.83 mi (7,785.74 km) |
| Muscle Shoals to Olching | 4,846.60 mi (7,799.84 km) |
| Muscle Shoals to Oldenburg | 4,564.30 mi (7,345.52 km) |
| Muscle Shoals to Oldenburg in Holstein | 4,624.72 mi (7,442.77 km) |
| Muscle Shoals to Olfen | 4,577.11 mi (7,366.15 km) |
| Muscle Shoals to Olpe | 4,616.28 mi (7,429.19 km) |
| Muscle Shoals to Olsberg | 4,630.74 mi (7,452.46 km) |
| Muscle Shoals to Oranienburg | 4,761.07 mi (7,662.19 km) |
| Muscle Shoals to Ortenberg | 4,684.86 mi (7,539.56 km) |
