| Spanish Springs to Oskaloosa (Iowa) | 1,419.35 mi (2,284.22 km) |
| Spanish Springs to Oswego (Illinois) | 1,638.87 mi (2,637.51 km) |
| Spanish Springs to Oswego (New York) | 2,222.26 mi (3,576.38 km) |
| Spanish Springs to Otsego (Minnesota) | 1,376.35 mi (2,215.02 km) |
| Spanish Springs to Ottawa (Illinois) | 1,616.02 mi (2,600.74 km) |
| Spanish Springs to Ottawa (Kansas) | 1,306.12 mi (2,101.99 km) |
| Spanish Springs to Ottumwa (Iowa) | 1,432.43 mi (2,305.28 km) |
| Spanish Springs to Overland (Missouri) | 1,563.80 mi (2,516.69 km) |
| Spanish Springs to Overland Park (Kansas) | 1,333.02 mi (2,145.29 km) |
| Spanish Springs to Overlea (Maryland) | 2,277.64 mi (3,665.51 km) |
| Spanish Springs to Oviedo (Florida) | 2,307.35 mi (3,713.32 km) |
| Spanish Springs to Owasso (Oklahoma) | 1,315.05 mi (2,116.37 km) |
| Spanish Springs to Owatonna (Minnesota) | 1,387.83 mi (2,233.50 km) |
| Spanish Springs to Owensboro (Kentucky) | 1,750.41 mi (2,817.01 km) |
| Spanish Springs to Owings Mills (Maryland) | 2,262.67 mi (3,641.41 km) |
