| Echternach to Oswego (Illinois) | 4,290.20 mi (6,904.41 km) |
| Echternach to Oswego (New York) | 3,753.88 mi (6,041.29 km) |
| Echternach to Otsego (Minnesota) | 4,310.57 mi (6,937.18 km) |
| Echternach to Ottawa (Illinois) | 4,324.14 mi (6,959.03 km) |
| Echternach to Ottawa (Kansas) | 4,699.00 mi (7,562.32 km) |
| Echternach to Ottumwa (Iowa) | 4,473.85 mi (7,199.97 km) |
| Echternach to Overland (Missouri) | 4,510.98 mi (7,259.72 km) |
| Echternach to Overland Park (Kansas) | 4,663.27 mi (7,504.81 km) |
| Echternach to Overlea (Maryland) | 3,932.62 mi (6,328.94 km) |
| Echternach to Oviedo (Florida) | 4,632.44 mi (7,455.20 km) |
| Echternach to Owasso (Oklahoma) | 4,837.73 mi (7,785.57 km) |
| Echternach to Owatonna (Minnesota) | 4,353.60 mi (7,006.45 km) |
| Echternach to Owensboro (Kentucky) | 4,431.19 mi (7,131.31 km) |
| Echternach to Owings Mills (Maryland) | 3,941.68 mi (6,343.52 km) |
| Echternach to Owosso (Michigan) | 4,071.92 mi (6,553.12 km) |
