| Amherst to Oswego (Illinois) | 316.34 mi (509.10 km) |
| Amherst to Oswego (New York) | 324.62 mi (522.43 km) |
| Amherst to Otsego (Minnesota) | 630.84 mi (1,015.23 km) |
| Amherst to Ottawa (Illinois) | 341.89 mi (550.22 km) |
| Amherst to Ottawa (Kansas) | 715.69 mi (1,151.79 km) |
| Amherst to Ottumwa (Iowa) | 529.92 mi (852.83 km) |
| Amherst to Overland (Missouri) | 469.04 mi (754.85 km) |
| Amherst to Overland Park (Kansas) | 679.80 mi (1,094.03 km) |
| Amherst to Overlea (Maryland) | 331.91 mi (534.16 km) |
| Amherst to Oviedo (Florida) | 882.49 mi (1,420.24 km) |
| Amherst to Owasso (Oklahoma) | 811.49 mi (1,305.96 km) |
| Amherst to Owatonna (Minnesota) | 587.74 mi (945.88 km) |
| Amherst to Owensboro (Kentucky) | 362.01 mi (582.61 km) |
| Amherst to Owings Mills (Maryland) | 317.41 mi (510.83 km) |
| Amherst to Owosso (Michigan) | 148.44 mi (238.89 km) |
