| Fort Atkinson to Oerlinghausen | 4,247.91 mi (6,836.34 km) |
| Fort Atkinson to Oestrich-Winkel | 4,301.03 mi (6,921.85 km) |
| Fort Atkinson to Offenburg | 4,359.45 mi (7,015.85 km) |
| Fort Atkinson to Oftersheim | 4,347.41 mi (6,996.48 km) |
| Fort Atkinson to Ohrdruf | 4,366.01 mi (7,026.42 km) |
| Fort Atkinson to Ohringen | 4,387.80 mi (7,061.48 km) |
| Fort Atkinson to Olbernhau | 4,463.72 mi (7,183.67 km) |
| Fort Atkinson to Olching | 4,495.51 mi (7,234.82 km) |
| Fort Atkinson to Oldenburg | 4,186.77 mi (6,737.96 km) |
| Fort Atkinson to Oldenburg in Holstein | 4,232.51 mi (6,811.56 km) |
| Fort Atkinson to Olfen | 4,212.11 mi (6,778.74 km) |
| Fort Atkinson to Olpe | 4,255.22 mi (6,848.11 km) |
| Fort Atkinson to Olsberg | 4,265.47 mi (6,864.61 km) |
| Fort Atkinson to Oranienburg | 4,373.30 mi (7,038.14 km) |
| Fort Atkinson to Ortenberg | 4,325.19 mi (6,960.72 km) |
