| Aguas Santas to Oerlinghausen | 1,101.16 mi (1,772.15 km) |
| Aguas Santas to Oestrich-Winkel | 1,002.22 mi (1,612.91 km) |
| Aguas Santas to Offenburg | 949.22 mi (1,527.62 km) |
| Aguas Santas to Oftersheim | 1,003.71 mi (1,615.32 km) |
| Aguas Santas to Ohrdruf | 1,135.08 mi (1,826.73 km) |
| Aguas Santas to Ohringen | 1,035.36 mi (1,666.25 km) |
| Aguas Santas to Olbernhau | 1,232.47 mi (1,983.47 km) |
| Aguas Santas to Olching | 1,086.01 mi (1,747.77 km) |
| Aguas Santas to Oldenburg | 1,135.88 mi (1,828.03 km) |
| Aguas Santas to Oldenburg in Holstein | 1,270.99 mi (2,045.47 km) |
| Aguas Santas to Olfen | 1,046.89 mi (1,684.80 km) |
| Aguas Santas to Olpe | 1,034.08 mi (1,664.19 km) |
| Aguas Santas to Olsberg | 1,070.32 mi (1,722.51 km) |
| Aguas Santas to Oranienburg | 1,293.06 mi (2,080.98 km) |
| Aguas Santas to Ortenberg | 1,054.93 mi (1,697.74 km) |
