| Kelso to Oakley (California) | 565.10 mi (909.43 km) |
| Kelso to Oakton (Virginia) | 2,341.77 mi (3,768.72 km) |
| Kelso to Oakville (Missouri) | 1,733.32 mi (2,789.51 km) |
| Kelso to Oatfield (Oregon) | 51.17 mi (82.36 km) |
| Kelso to Ocala (Florida) | 2,481.13 mi (3,992.99 km) |
| Kelso to Ocean Acres (New Jersey) | 2,458.83 mi (3,957.10 km) |
| Kelso to Ocean City (New Jersey) | 2,458.42 mi (3,956.45 km) |
| Kelso to Ocean Pines (Maryland) | 2,460.77 mi (3,960.23 km) |
| Kelso to Ocean Pointe (Hawaii) | 2,612.44 mi (4,204.32 km) |
| Kelso to Ocean Springs (Mississippi) | 2,121.48 mi (3,414.19 km) |
| Kelso to Oceanside (California) | 938.75 mi (1,510.77 km) |
| Kelso to Oceanside (New York) | 2,462.22 mi (3,962.56 km) |
| Kelso to Ocoee (Florida) | 2,536.31 mi (4,081.80 km) |
| Kelso to Oconomowoc (Wisconsin) | 1,691.27 mi (2,721.84 km) |
| Kelso to Odenton (Maryland) | 2,365.16 mi (3,806.35 km) |
