| Erie to Oswego (Illinois) | 425.87 mi (685.38 km) |
| Erie to Oswego (New York) | 203.27 mi (327.14 km) |
| Erie to Otsego (Minnesota) | 709.89 mi (1,142.45 km) |
| Erie to Ottawa (Illinois) | 454.13 mi (730.86 km) |
| Erie to Ottawa (Kansas) | 834.55 mi (1,343.07 km) |
| Erie to Ottumwa (Iowa) | 642.08 mi (1,033.33 km) |
| Erie to Overland (Missouri) | 590.46 mi (950.25 km) |
| Erie to Overland Park (Kansas) | 798.38 mi (1,284.87 km) |
| Erie to Overlea (Maryland) | 266.07 mi (428.20 km) |
| Erie to Oviedo (Florida) | 932.00 mi (1,499.90 km) |
| Erie to Owasso (Oklahoma) | 932.95 mi (1,501.43 km) |
| Erie to Owatonna (Minnesota) | 676.85 mi (1,089.29 km) |
| Erie to Owensboro (Kentucky) | 479.26 mi (771.29 km) |
| Erie to Owings Mills (Maryland) | 253.80 mi (408.45 km) |
| Erie to Owosso (Michigan) | 217.43 mi (349.92 km) |
