| Siniscola to Oerlinghausen | 788.65 mi (1,269.21 km) |
| Siniscola to Oestrich-Winkel | 656.40 mi (1,056.38 km) |
| Siniscola to Offenburg | 552.14 mi (888.59 km) |
| Siniscola to Oftersheim | 610.17 mi (981.97 km) |
| Siniscola to Ohrdruf | 710.21 mi (1,142.98 km) |
| Siniscola to Ohringen | 596.05 mi (959.26 km) |
| Siniscola to Olbernhau | 718.89 mi (1,156.94 km) |
| Siniscola to Olching | 532.89 mi (857.60 km) |
| Siniscola to Oldenburg | 871.24 mi (1,402.13 km) |
| Siniscola to Oldenburg in Holstein | 949.94 mi (1,528.78 km) |
| Siniscola to Olfen | 777.68 mi (1,251.56 km) |
| Siniscola to Olpe | 727.00 mi (1,169.99 km) |
| Siniscola to Olsberg | 746.78 mi (1,201.82 km) |
| Siniscola to Oranienburg | 857.87 mi (1,380.61 km) |
| Siniscola to Ortenberg | 676.54 mi (1,088.79 km) |
