| Ontario to Channelview (Texas) | 1,348.40 mi (2,170.04 km) |
| Ontario to Chantilly (Virginia) | 2,238.45 mi (3,602.44 km) |
| Ontario to Chaparral (New Mexico) | 662.83 mi (1,066.72 km) |
| Ontario to Chapel Hill (North Carolina) | 2,173.00 mi (3,497.11 km) |
| Ontario to Charleston (Illinois) | 1,663.86 mi (2,677.73 km) |
| Ontario to Charleston (South Carolina) | 2,159.70 mi (3,475.70 km) |
| Ontario to Charleston (West Virginia) | 2,015.02 mi (3,242.86 km) |
| Ontario to Charlotte (North Carolina) | 2,080.56 mi (3,348.33 km) |
| Ontario to Charlottesville (Virginia) | 2,186.94 mi (3,519.53 km) |
| Ontario to Chaska (Minnesota) | 1,473.19 mi (2,370.87 km) |
| Ontario to Chatham (Illinois) | 1,584.47 mi (2,549.96 km) |
| Ontario to Chattanooga (Tennessee) | 1,834.65 mi (2,952.58 km) |
| Ontario to Cheat Lake (West Virginia) | 2,107.05 mi (3,390.97 km) |
| Ontario to Chelsea (Alabama) | 1,774.81 mi (2,856.29 km) |
| Ontario to Chelsea (Massachusetts) | 2,560.01 mi (4,119.94 km) |
