| Morgantown to Oerlinghausen | 4,081.49 mi (6,568.52 km) |
| Morgantown to Oestrich-Winkel | 4,116.15 mi (6,624.31 km) |
| Morgantown to Offenburg | 4,161.88 mi (6,697.90 km) |
| Morgantown to Oftersheim | 4,159.25 mi (6,693.67 km) |
| Morgantown to Ohrdruf | 4,196.61 mi (6,753.79 km) |
| Morgantown to Ohringen | 4,201.24 mi (6,761.24 km) |
| Morgantown to Olbernhau | 4,301.56 mi (6,922.69 km) |
| Morgantown to Olching | 4,307.14 mi (6,931.68 km) |
| Morgantown to Oldenburg | 4,029.07 mi (6,484.16 km) |
| Morgantown to Oldenburg in Holstein | 4,092.58 mi (6,586.38 km) |
| Morgantown to Olfen | 4,039.71 mi (6,501.29 km) |
| Morgantown to Olpe | 4,078.26 mi (6,563.33 km) |
| Morgantown to Olsberg | 4,093.31 mi (6,587.54 km) |
| Morgantown to Oranienburg | 4,227.63 mi (6,803.71 km) |
| Morgantown to Ortenberg | 4,146.57 mi (6,673.26 km) |
