| Barmstedt to Oswego (Illinois) | 4,262.01 mi (6,859.04 km) |
| Barmstedt to Oswego (New York) | 3,755.45 mi (6,043.81 km) |
| Barmstedt to Otsego (Minnesota) | 4,250.63 mi (6,840.73 km) |
| Barmstedt to Ottawa (Illinois) | 4,295.73 mi (6,913.31 km) |
| Barmstedt to Ottawa (Kansas) | 4,659.93 mi (7,499.43 km) |
| Barmstedt to Ottumwa (Iowa) | 4,434.98 mi (7,137.41 km) |
| Barmstedt to Overland (Missouri) | 4,488.30 mi (7,223.22 km) |
| Barmstedt to Overland Park (Kansas) | 4,625.08 mi (7,443.35 km) |
| Barmstedt to Overlea (Maryland) | 3,954.02 mi (6,363.39 km) |
| Barmstedt to Oviedo (Florida) | 4,682.61 mi (7,535.94 km) |
| Barmstedt to Owasso (Oklahoma) | 4,805.25 mi (7,733.30 km) |
| Barmstedt to Owatonna (Minnesota) | 4,299.69 mi (6,919.69 km) |
| Barmstedt to Owensboro (Kentucky) | 4,423.50 mi (7,118.93 km) |
| Barmstedt to Owings Mills (Maryland) | 3,961.94 mi (6,376.13 km) |
| Barmstedt to Owosso (Michigan) | 4,051.38 mi (6,520.06 km) |
