| Ontario to Cold Springs (Nevada) | 411.97 mi (663.00 km) |
| Ontario to Coldwater (Michigan) | 1,845.00 mi (2,969.24 km) |
| Ontario to Colesville (Maryland) | 2,261.35 mi (3,639.29 km) |
| Ontario to College (Alaska) | 2,474.78 mi (3,982.78 km) |
| Ontario to College Park (Georgia) | 1,893.84 mi (3,047.83 km) |
| Ontario to College Park (Maryland) | 2,265.33 mi (3,645.70 km) |
| Ontario to College Station (Texas) | 1,264.64 mi (2,035.25 km) |
| Ontario to Collegedale (Tennessee) | 1,845.94 mi (2,970.76 km) |
| Ontario to Colleyville (Texas) | 1,179.87 mi (1,898.82 km) |
| Ontario to Collierville (Tennessee) | 1,584.64 mi (2,550.23 km) |
| Ontario to Collinsville (Illinois) | 1,562.55 mi (2,514.69 km) |
| Ontario to Colonia (New Jersey) | 2,396.92 mi (3,857.48 km) |
| Ontario to Colonial Heights (Virginia) | 2,251.55 mi (3,623.52 km) |
| Ontario to Colonial Park (Pennsylvania) | 2,267.02 mi (3,648.41 km) |
| Ontario to Colorado Springs (Colorado) | 787.01 mi (1,266.58 km) |
