| Mering to Oswego (Illinois) | 4,521.21 mi (7,276.19 km) |
| Mering to Oswego (New York) | 3,986.45 mi (6,415.57 km) |
| Mering to Otsego (Minnesota) | 4,537.55 mi (7,302.48 km) |
| Mering to Ottawa (Illinois) | 4,555.15 mi (7,330.80 km) |
| Mering to Ottawa (Kansas) | 4,929.06 mi (7,932.55 km) |
| Mering to Ottumwa (Iowa) | 4,703.85 mi (7,570.11 km) |
| Mering to Overland (Missouri) | 4,742.50 mi (7,632.32 km) |
| Mering to Overland Park (Kansas) | 4,893.41 mi (7,875.18 km) |
| Mering to Overlea (Maryland) | 4,165.18 mi (6,703.21 km) |
| Mering to Oviedo (Florida) | 4,863.00 mi (7,826.25 km) |
| Mering to Owasso (Oklahoma) | 5,068.51 mi (8,156.98 km) |
| Mering to Owatonna (Minnesota) | 4,581.56 mi (7,373.31 km) |
| Mering to Owensboro (Kentucky) | 4,663.55 mi (7,505.26 km) |
| Mering to Owings Mills (Maryland) | 4,174.27 mi (6,717.83 km) |
| Mering to Owosso (Michigan) | 4,303.49 mi (6,925.79 km) |
