| Fredericksburg to Oerlinghausen | 4,050.79 mi (6,519.12 km) |
| Fredericksburg to Oestrich-Winkel | 4,079.17 mi (6,564.79 km) |
| Fredericksburg to Offenburg | 4,120.47 mi (6,631.26 km) |
| Fredericksburg to Oftersheim | 4,120.99 mi (6,632.10 km) |
| Fredericksburg to Ohrdruf | 4,164.43 mi (6,702.00 km) |
| Fredericksburg to Ohringen | 4,163.34 mi (6,700.25 km) |
| Fredericksburg to Olbernhau | 4,271.32 mi (6,874.02 km) |
| Fredericksburg to Olching | 4,268.21 mi (6,869.02 km) |
| Fredericksburg to Oldenburg | 4,001.48 mi (6,439.76 km) |
| Fredericksburg to Oldenburg in Holstein | 4,070.55 mi (6,550.92 km) |
| Fredericksburg to Olfen | 4,007.21 mi (6,448.98 km) |
| Fredericksburg to Olpe | 4,044.08 mi (6,508.32 km) |
| Fredericksburg to Olsberg | 4,060.65 mi (6,534.99 km) |
| Fredericksburg to Oranienburg | 4,203.13 mi (6,764.28 km) |
| Fredericksburg to Ortenberg | 4,111.54 mi (6,616.89 km) |
