| Ontario to Keene (New Hampshire) | 2,494.33 mi (4,014.24 km) |
| Ontario to Keizer (Oregon) | 810.18 mi (1,303.86 km) |
| Ontario to Keller (Texas) | 1,174.99 mi (1,890.96 km) |
| Ontario to Kelso (Washington) | 879.91 mi (1,416.08 km) |
| Ontario to Kemp Mill (Maryland) | 2,260.41 mi (3,637.77 km) |
| Ontario to Ken Caryl (Colorado) | 788.84 mi (1,269.51 km) |
| Ontario to Kendale Lakes (Florida) | 2,288.28 mi (3,682.62 km) |
| Ontario to Kendall (Florida) | 2,292.31 mi (3,689.12 km) |
| Ontario to Kendall Park (New Jersey) | 2,384.62 mi (3,837.68 km) |
| Ontario to Kendall West (Florida) | 2,286.55 mi (3,679.85 km) |
| Ontario to Kenmore (New York) | 2,162.19 mi (3,479.72 km) |
| Ontario to Kenmore (Washington) | 977.49 mi (1,573.11 km) |
| Ontario to Kenner (Louisiana) | 1,621.21 mi (2,609.09 km) |
| Ontario to Kennesaw (Georgia) | 1,880.55 mi (3,026.45 km) |
| Ontario to Kennett (Missouri) | 1,559.22 mi (2,509.33 km) |
