| Sandusky to Oerlinghausen | 4,098.20 mi (6,595.42 km) |
| Sandusky to Oestrich-Winkel | 4,140.31 mi (6,663.18 km) |
| Sandusky to Offenburg | 4,191.24 mi (6,745.15 km) |
| Sandusky to Oftersheim | 4,184.82 mi (6,734.82 km) |
| Sandusky to Ohrdruf | 4,214.78 mi (6,783.03 km) |
| Sandusky to Ohringen | 4,226.26 mi (6,801.51 km) |
| Sandusky to Olbernhau | 4,317.10 mi (6,947.70 km) |
| Sandusky to Olching | 4,333.12 mi (6,973.49 km) |
| Sandusky to Oldenburg | 4,042.21 mi (6,505.30 km) |
| Sandusky to Oldenburg in Holstein | 4,098.89 mi (6,596.53 km) |
| Sandusky to Olfen | 4,058.70 mi (6,531.85 km) |
| Sandusky to Olpe | 4,099.16 mi (6,596.96 km) |
| Sandusky to Olsberg | 4,112.33 mi (6,618.16 km) |
| Sandusky to Oranienburg | 4,236.51 mi (6,818.01 km) |
| Sandusky to Ortenberg | 4,168.29 mi (6,708.22 km) |
