| Ritterhude to Oswego (Illinois) | 4,249.39 mi (6,838.74 km) |
| Ritterhude to Oswego (New York) | 3,737.06 mi (6,014.22 km) |
| Ritterhude to Otsego (Minnesota) | 4,244.02 mi (6,830.09 km) |
| Ritterhude to Ottawa (Illinois) | 4,283.18 mi (6,893.11 km) |
| Ritterhude to Ottawa (Kansas) | 4,649.57 mi (7,482.76 km) |
| Ritterhude to Ottumwa (Iowa) | 4,424.47 mi (7,120.49 km) |
| Ritterhude to Overland (Missouri) | 4,474.79 mi (7,201.48 km) |
| Ritterhude to Overland Park (Kansas) | 4,614.54 mi (7,426.39 km) |
| Ritterhude to Overlea (Maryland) | 3,932.24 mi (6,328.32 km) |
| Ritterhude to Oviedo (Florida) | 4,656.23 mi (7,493.48 km) |
| Ritterhude to Owasso (Oklahoma) | 4,793.73 mi (7,714.77 km) |
| Ritterhude to Owatonna (Minnesota) | 4,291.95 mi (6,907.23 km) |
| Ritterhude to Owensboro (Kentucky) | 4,407.20 mi (7,092.70 km) |
| Ritterhude to Owings Mills (Maryland) | 3,940.36 mi (6,341.39 km) |
| Ritterhude to Owosso (Michigan) | 4,037.22 mi (6,497.27 km) |
