| Highland to Oswego (Illinois) | 1,647.45 mi (2,651.31 km) |
| Highland to Oswego (New York) | 2,258.62 mi (3,634.90 km) |
| Highland to Otsego (Minnesota) | 1,461.81 mi (2,352.55 km) |
| Highland to Ottawa (Illinois) | 1,618.95 mi (2,605.46 km) |
| Highland to Ottawa (Kansas) | 1,254.19 mi (2,018.42 km) |
| Highland to Ottumwa (Iowa) | 1,431.00 mi (2,302.97 km) |
| Highland to Overland (Missouri) | 1,517.67 mi (2,442.45 km) |
| Highland to Overland Park (Kansas) | 1,287.65 mi (2,072.26 km) |
| Highland to Overlea (Maryland) | 2,260.45 mi (3,637.84 km) |
| Highland to Oviedo (Florida) | 2,144.06 mi (3,450.53 km) |
| Highland to Owasso (Oklahoma) | 1,211.36 mi (1,949.50 km) |
| Highland to Owatonna (Minnesota) | 1,449.23 mi (2,332.32 km) |
| Highland to Owensboro (Kentucky) | 1,692.37 mi (2,723.61 km) |
| Highland to Owings Mills (Maryland) | 2,245.65 mi (3,614.02 km) |
| Highland to Owosso (Michigan) | 1,871.06 mi (3,011.19 km) |
