| Dyer to Oswego (Illinois) | 44.68 mi (71.90 km) |
| Dyer to Oswego (New York) | 576.55 mi (927.87 km) |
| Dyer to Otsego (Minnesota) | 402.24 mi (647.34 km) |
| Dyer to Ottawa (Illinois) | 68.94 mi (110.94 km) |
| Dyer to Ottawa (Kansas) | 456.18 mi (734.15 km) |
| Dyer to Ottumwa (Iowa) | 257.10 mi (413.76 km) |
| Dyer to Overland (Missouri) | 245.54 mi (395.15 km) |
| Dyer to Overland Park (Kansas) | 419.41 mi (674.98 km) |
| Dyer to Overlea (Maryland) | 596.11 mi (959.35 km) |
| Dyer to Oviedo (Florida) | 955.73 mi (1,538.10 km) |
| Dyer to Owasso (Oklahoma) | 573.86 mi (923.55 km) |
| Dyer to Owatonna (Minnesota) | 340.87 mi (548.58 km) |
| Dyer to Owensboro (Kentucky) | 259.26 mi (417.24 km) |
| Dyer to Owings Mills (Maryland) | 581.19 mi (935.34 km) |
| Dyer to Owosso (Michigan) | 199.40 mi (320.91 km) |
