| Willoughby to Brown Deer (Wisconsin) | 351.13 mi (565.08 km) |
| Willoughby to Brownsburg (Indiana) | 288.90 mi (464.94 km) |
| Willoughby to Brownsville (Florida) | 1,095.38 mi (1,762.84 km) |
| Willoughby to Brownsville (Texas) | 1,415.47 mi (2,277.97 km) |
| Willoughby to Brownwood (Texas) | 1,187.32 mi (1,910.81 km) |
| Willoughby to Brunswick (Georgia) | 725.56 mi (1,167.67 km) |
| Willoughby to Brunswick (Ohio) | 34.86 mi (56.11 km) |
| Willoughby to Brushy Creek (Texas) | 1,189.33 mi (1,914.04 km) |
| Willoughby to Bryan (Texas) | 1,125.32 mi (1,811.03 km) |
| Willoughby to Bryant (Arkansas) | 772.71 mi (1,243.55 km) |
| Willoughby to Bryn Mawr-Skyway (Washington) | 2,025.69 mi (3,260.03 km) |
| Willoughby to Buckeye (Arizona) | 1,791.43 mi (2,883.03 km) |
| Willoughby to Buckhall (Virginia) | 290.57 mi (467.63 km) |
| Willoughby to Bucyrus (Ohio) | 99.87 mi (160.72 km) |
| Willoughby to Buda (Texas) | 1,215.38 mi (1,955.96 km) |
