| Ontario to Brown Deer (Wisconsin) | 1,708.70 mi (2,749.89 km) |
| Ontario to Brownsburg (Indiana) | 1,760.64 mi (2,833.48 km) |
| Ontario to Brownsville (Florida) | 2,294.64 mi (3,692.87 km) |
| Ontario to Brownsville (Texas) | 1,324.05 mi (2,130.86 km) |
| Ontario to Brownwood (Texas) | 1,091.36 mi (1,756.38 km) |
| Ontario to Brunswick (Georgia) | 2,101.98 mi (3,382.81 km) |
| Ontario to Brunswick (Ohio) | 2,004.95 mi (3,226.65 km) |
| Ontario to Brushy Creek (Texas) | 1,183.89 mi (1,905.29 km) |
| Ontario to Bryan (Texas) | 1,258.25 mi (2,024.96 km) |
| Ontario to Bryant (Arkansas) | 1,429.89 mi (2,301.19 km) |
| Ontario to Bryn Mawr-Skyway (Washington) | 960.34 mi (1,545.52 km) |
| Ontario to Buckeye (Arizona) | 288.24 mi (463.88 km) |
| Ontario to Buckhall (Virginia) | 2,239.16 mi (3,603.57 km) |
| Ontario to Bucyrus (Ohio) | 1,943.55 mi (3,127.84 km) |
| Ontario to Buda (Texas) | 1,186.86 mi (1,910.06 km) |
