| Ontario to Beeville (Texas) | 1,233.73 mi (1,985.49 km) |
| Ontario to Bel Air (Maryland) | 2,294.14 mi (3,692.06 km) |
| Ontario to Bel Air North (Maryland) | 2,292.61 mi (3,689.60 km) |
| Ontario to Bel Air South (Maryland) | 2,296.13 mi (3,695.27 km) |
| Ontario to Belgrade (Montana) | 879.12 mi (1,414.80 km) |
| Ontario to Bell (California) | 33.09 mi (53.26 km) |
| Ontario to Bell Gardens (California) | 31.83 mi (51.22 km) |
| Ontario to Bella Vista (Arkansas) | 1,324.01 mi (2,130.79 km) |
| Ontario to Bellair-Meadowbrook Terrace (Florida) | 2,105.34 mi (3,388.22 km) |
| Ontario to Bellaire (Texas) | 1,330.55 mi (2,141.31 km) |
| Ontario to Belle Chasse (Louisiana) | 1,638.70 mi (2,637.23 km) |
| Ontario to Belle Glade (Florida) | 2,247.18 mi (3,616.48 km) |
| Ontario to Bellefontaine (Ohio) | 1,900.73 mi (3,058.93 km) |
| Ontario to Bellefontaine Neighbors (Missouri) | 1,550.94 mi (2,495.99 km) |
| Ontario to Belleville (Illinois) | 1,562.84 mi (2,515.14 km) |
