| Ontario to Kalispell (Montana) | 993.97 mi (1,599.65 km) |
| Ontario to Kaneohe (Hawaii) | 2,588.74 mi (4,166.17 km) |
| Ontario to Kankakee (Illinois) | 1,690.93 mi (2,721.30 km) |
| Ontario to Kannapolis (North Carolina) | 2,088.43 mi (3,361.00 km) |
| Ontario to Kansas City (Kansas) | 1,312.22 mi (2,111.81 km) |
| Ontario to Kansas City (Missouri) | 1,322.31 mi (2,128.05 km) |
| Ontario to Kapaa (Hawaii) | 2,655.11 mi (4,272.99 km) |
| Ontario to Kapolei (Hawaii) | 2,606.61 mi (4,194.93 km) |
| Ontario to Katy (Texas) | 1,307.43 mi (2,104.10 km) |
| Ontario to Kaukauna (Wisconsin) | 1,711.76 mi (2,754.81 km) |
| Ontario to Kaysville (Utah) | 573.65 mi (923.19 km) |
| Ontario to Kearney (Missouri) | 1,334.94 mi (2,148.37 km) |
| Ontario to Kearney (Nebraska) | 1,113.48 mi (1,791.97 km) |
| Ontario to Kearns (Utah) | 550.40 mi (885.79 km) |
| Ontario to Kearny (New Jersey) | 2,406.48 mi (3,872.86 km) |
