| Ontario to Town and Country (Missouri) | 1,536.91 mi (2,473.41 km) |
| Ontario to Towson (Maryland) | 2,280.24 mi (3,669.69 km) |
| Ontario to Tracy (California) | 333.50 mi (536.72 km) |
| Ontario to Traverse City (Michigan) | 1,846.89 mi (2,972.29 km) |
| Ontario to Travilah (Maryland) | 2,248.26 mi (3,618.22 km) |
| Ontario to Trenton (Michigan) | 1,938.54 mi (3,119.78 km) |
| Ontario to Trenton (New Jersey) | 2,374.85 mi (3,821.95 km) |
| Ontario to Trenton (Ohio) | 1,861.82 mi (2,996.31 km) |
| Ontario to Triangle (Virginia) | 2,247.00 mi (3,616.20 km) |
| Ontario to Trinity (Florida) | 2,096.16 mi (3,373.45 km) |
| Ontario to Trophy Club (Texas) | 1,176.25 mi (1,892.99 km) |
| Ontario to Trotwood (Ohio) | 1,870.09 mi (3,009.62 km) |
| Ontario to Troutdale (Oregon) | 833.71 mi (1,341.73 km) |
| Ontario to Troy (Alabama) | 1,834.30 mi (2,952.03 km) |
| Ontario to Troy (Illinois) | 1,568.60 mi (2,524.41 km) |
