| Sunset to Oskaloosa (Iowa) | 1,285.75 mi (2,069.21 km) |
| Sunset to Oswego (Illinois) | 1,194.16 mi (1,921.82 km) |
| Sunset to Oswego (New York) | 1,245.16 mi (2,003.89 km) |
| Sunset to Otsego (Minnesota) | 1,539.15 mi (2,477.02 km) |
| Sunset to Ottawa (Illinois) | 1,184.79 mi (1,906.74 km) |
| Sunset to Ottawa (Kansas) | 1,243.44 mi (2,001.12 km) |
| Sunset to Ottumwa (Iowa) | 1,263.75 mi (2,033.81 km) |
| Sunset to Overland (Missouri) | 1,070.07 mi (1,722.11 km) |
| Sunset to Overland Park (Kansas) | 1,233.85 mi (1,985.69 km) |
| Sunset to Overlea (Maryland) | 969.50 mi (1,560.26 km) |
| Sunset to Oviedo (Florida) | 210.31 mi (338.46 km) |
| Sunset to Owasso (Oklahoma) | 1,169.86 mi (1,882.70 km) |
| Sunset to Owatonna (Minnesota) | 1,460.88 mi (2,351.06 km) |
| Sunset to Owensboro (Kentucky) | 921.98 mi (1,483.79 km) |
| Sunset to Owings Mills (Maryland) | 969.17 mi (1,559.73 km) |
