| Keller to Orangevale (California) | 1,397.40 mi (2,248.89 km) |
| Keller to Orchards (Washington) | 1,603.69 mi (2,580.89 km) |
| Keller to Orcutt (California) | 1,333.98 mi (2,146.83 km) |
| Keller to Oregon (Ohio) | 966.28 mi (1,555.07 km) |
| Keller to Oregon (Wisconsin) | 810.91 mi (1,305.04 km) |
| Keller to Oregon City (Oregon) | 1,596.65 mi (2,569.56 km) |
| Keller to Orem (Utah) | 948.50 mi (1,526.46 km) |
| Keller to Orinda (California) | 1,441.49 mi (2,319.85 km) |
| Keller to Orland Park (Illinois) | 789.08 mi (1,269.90 km) |
| Keller to Orlando (Florida) | 991.62 mi (1,595.85 km) |
| Keller to Ormond Beach (Florida) | 985.16 mi (1,585.46 km) |
| Keller to Oro Valley (Arizona) | 799.95 mi (1,287.39 km) |
| Keller to Oroville (California) | 1,425.27 mi (2,293.75 km) |
| Keller to Oshkosh (Wisconsin) | 896.94 mi (1,443.48 km) |
| Keller to Oskaloosa (Iowa) | 630.12 mi (1,014.07 km) |
