| Kelso to Odessa (Texas) | 1,470.27 mi (2,366.17 km) |
| Kelso to Ogden (Utah) | 641.28 mi (1,032.05 km) |
| Kelso to Oildale (California) | 765.76 mi (1,232.37 km) |
| Kelso to Ojus (Florida) | 2,718.94 mi (4,375.72 km) |
| Kelso to Okemos (Michigan) | 1,894.81 mi (3,049.40 km) |
| Kelso to Oklahoma City (Oklahoma) | 1,508.38 mi (2,427.51 km) |
| Kelso to Okmulgee (Oklahoma) | 1,570.61 mi (2,527.65 km) |
| Kelso to Olathe (Kansas) | 1,505.45 mi (2,422.79 km) |
| Kelso to Old Jamestown (Missouri) | 1,722.31 mi (2,771.78 km) |
| Kelso to Oldsmar (Florida) | 2,507.38 mi (4,035.24 km) |
| Kelso to Olean (New York) | 2,194.37 mi (3,531.50 km) |
| Kelso to Olive Branch (Mississippi) | 1,881.17 mi (3,027.46 km) |
| Kelso to Olivehurst (California) | 491.39 mi (790.81 km) |
| Kelso to Olney (Maryland) | 2,344.60 mi (3,773.27 km) |
| Kelso to Olympia (Washington) | 63.44 mi (102.09 km) |
