| Sylvania to Oerlinghausen | 4,122.68 mi (6,634.81 km) |
| Sylvania to Oestrich-Winkel | 4,166.67 mi (6,705.61 km) |
| Sylvania to Offenburg | 4,218.89 mi (6,789.65 km) |
| Sylvania to Oftersheim | 4,211.52 mi (6,777.79 km) |
| Sylvania to Ohrdruf | 4,239.57 mi (6,822.93 km) |
| Sylvania to Ohringen | 4,252.80 mi (6,844.23 km) |
| Sylvania to Olbernhau | 4,341.17 mi (6,986.43 km) |
| Sylvania to Olching | 4,359.86 mi (7,016.51 km) |
| Sylvania to Oldenburg | 4,065.78 mi (6,543.24 km) |
| Sylvania to Oldenburg in Holstein | 4,120.65 mi (6,631.54 km) |
| Sylvania to Olfen | 4,083.78 mi (6,572.22 km) |
| Sylvania to Olpe | 4,124.71 mi (6,638.08 km) |
| Sylvania to Olsberg | 4,137.40 mi (6,658.50 km) |
| Sylvania to Oranienburg | 4,258.87 mi (6,854.00 km) |
| Sylvania to Ortenberg | 4,194.02 mi (6,749.62 km) |
