| Ada to Orangevale (California) | 6,126.90 mi (9,860.29 km) |
| Ada to Orchards (Washington) | 5,719.16 mi (9,204.09 km) |
| Ada to Orcutt (California) | 6,344.54 mi (10,210.55 km) |
| Ada to Oregon (Ohio) | 4,784.75 mi (7,700.31 km) |
| Ada to Oregon (Wisconsin) | 4,938.72 mi (7,948.10 km) |
| Ada to Oregon City (Oregon) | 5,742.14 mi (9,241.07 km) |
| Ada to Orem (Utah) | 5,785.89 mi (9,311.48 km) |
| Ada to Orinda (California) | 6,199.62 mi (9,977.33 km) |
| Ada to Orland Park (Illinois) | 4,949.77 mi (7,965.89 km) |
| Ada to Orlando (Florida) | 5,340.42 mi (8,594.58 km) |
| Ada to Ormond Beach (Florida) | 5,290.00 mi (8,513.43 km) |
| Ada to Oro Valley (Arizona) | 6,228.62 mi (10,024.00 km) |
| Ada to Oroville (California) | 6,084.33 mi (9,791.79 km) |
| Ada to Oshkosh (Wisconsin) | 4,855.45 mi (7,814.08 km) |
| Ada to Oskaloosa (Iowa) | 5,134.77 mi (8,263.62 km) |
