| Ontario to Timberwood Park (Texas) | 1,159.47 mi (1,865.99 km) |
| Ontario to Timonium (Maryland) | 2,280.85 mi (3,670.67 km) |
| Ontario to Tinley Park (Illinois) | 1,698.23 mi (2,733.03 km) |
| Ontario to Tinton Falls (New Jersey) | 2,409.85 mi (3,878.28 km) |
| Ontario to Tipp City (Ohio) | 1,877.35 mi (3,021.30 km) |
| Ontario to Titusville (Florida) | 2,192.33 mi (3,528.22 km) |
| Ontario to Toledo (Ohio) | 1,915.70 mi (3,083.01 km) |
| Ontario to Tomball (Texas) | 1,313.15 mi (2,113.32 km) |
| Ontario to Tonawanda (New York) | 2,161.92 mi (3,479.28 km) |
| Ontario to Tooele (Utah) | 535.02 mi (861.03 km) |
| Ontario to Topeka (Kansas) | 1,260.86 mi (2,029.16 km) |
| Ontario to Torrance (California) | 44.45 mi (71.54 km) |
| Ontario to Torrington (Connecticut) | 2,454.40 mi (3,949.98 km) |
| Ontario to Totowa (New Jersey) | 2,400.65 mi (3,863.47 km) |
| Ontario to Town 'n' Country (Florida) | 2,104.90 mi (3,387.50 km) |
