| Keller to Odessa (Texas) | 307.32 mi (494.59 km) |
| Keller to Ogden (Utah) | 992.14 mi (1,596.70 km) |
| Keller to Oildale (California) | 1,255.60 mi (2,020.70 km) |
| Keller to Ojus (Florida) | 1,132.35 mi (1,822.34 km) |
| Keller to Okemos (Michigan) | 969.94 mi (1,560.97 km) |
| Keller to Oklahoma City (Oklahoma) | 175.86 mi (283.02 km) |
| Keller to Okmulgee (Oklahoma) | 197.80 mi (318.33 km) |
| Keller to Olathe (Kansas) | 432.52 mi (696.08 km) |
| Keller to Old Jamestown (Missouri) | 563.09 mi (906.20 km) |
| Keller to Oldsmar (Florida) | 928.91 mi (1,494.94 km) |
| Keller to Olean (New York) | 1,204.48 mi (1,938.43 km) |
| Keller to Olive Branch (Mississippi) | 445.38 mi (716.77 km) |
| Keller to Olivehurst (California) | 1,419.67 mi (2,284.73 km) |
| Keller to Olney (Maryland) | 1,201.82 mi (1,934.14 km) |
| Keller to Olympia (Washington) | 1,659.79 mi (2,671.17 km) |
