| Roosevelt to Oerlinghausen | 3,786.37 mi (6,093.57 km) |
| Roosevelt to Oestrich-Winkel | 3,814.12 mi (6,138.23 km) |
| Roosevelt to Offenburg | 3,855.24 mi (6,204.42 km) |
| Roosevelt to Oftersheim | 3,855.87 mi (6,205.42 km) |
| Roosevelt to Ohrdruf | 3,899.80 mi (6,276.13 km) |
| Roosevelt to Ohringen | 3,898.23 mi (6,273.60 km) |
| Roosevelt to Olbernhau | 4,006.92 mi (6,448.52 km) |
| Roosevelt to Olching | 4,003.05 mi (6,442.28 km) |
| Roosevelt to Oldenburg | 3,737.54 mi (6,015.00 km) |
| Roosevelt to Oldenburg in Holstein | 3,807.70 mi (6,127.90 km) |
| Roosevelt to Olfen | 3,742.57 mi (6,023.09 km) |
| Roosevelt to Olpe | 3,779.26 mi (6,082.13 km) |
| Roosevelt to Olsberg | 3,795.99 mi (6,109.05 km) |
| Roosevelt to Oranienburg | 3,939.71 mi (6,340.35 km) |
| Roosevelt to Ortenberg | 3,846.64 mi (6,190.56 km) |
