| Ashton to Oswego (Illinois) | 3,848.01 mi (6,192.77 km) |
| Ashton to Oswego (New York) | 3,317.78 mi (5,339.46 km) |
| Ashton to Otsego (Minnesota) | 3,866.20 mi (6,222.05 km) |
| Ashton to Ottawa (Illinois) | 3,881.93 mi (6,247.37 km) |
| Ashton to Ottawa (Kansas) | 4,255.63 mi (6,848.78 km) |
| Ashton to Ottumwa (Iowa) | 4,030.43 mi (6,486.34 km) |
| Ashton to Overland (Missouri) | 4,069.80 mi (6,549.70 km) |
| Ashton to Overland Park (Kansas) | 4,219.98 mi (6,791.40 km) |
| Ashton to Overlea (Maryland) | 3,503.43 mi (5,638.22 km) |
| Ashton to Oviedo (Florida) | 4,217.19 mi (6,786.91 km) |
| Ashton to Owasso (Oklahoma) | 4,395.18 mi (7,073.35 km) |
| Ashton to Owatonna (Minnesota) | 3,909.27 mi (6,291.35 km) |
| Ashton to Owensboro (Kentucky) | 3,993.16 mi (6,426.36 km) |
| Ashton to Owings Mills (Maryland) | 3,512.05 mi (5,652.10 km) |
| Ashton to Owosso (Michigan) | 3,630.87 mi (5,843.32 km) |
