| San Marcos to Beeville (Texas) | 1,196.57 mi (1,925.70 km) |
| San Marcos to Bel Air (Maryland) | 2,294.93 mi (3,693.33 km) |
| San Marcos to Bel Air North (Maryland) | 2,293.44 mi (3,690.93 km) |
| San Marcos to Bel Air South (Maryland) | 2,296.85 mi (3,696.43 km) |
| San Marcos to Belgrade (Montana) | 929.71 mi (1,496.23 km) |
| San Marcos to Bell (California) | 82.23 mi (132.33 km) |
| San Marcos to Bell Gardens (California) | 80.55 mi (129.63 km) |
| San Marcos to Bella Vista (Arkansas) | 1,316.43 mi (2,118.59 km) |
| San Marcos to Bellair-Meadowbrook Terrace (Florida) | 2,084.25 mi (3,354.28 km) |
| San Marcos to Bellaire (Texas) | 1,299.50 mi (2,091.34 km) |
| San Marcos to Belle Chasse (Louisiana) | 1,612.07 mi (2,594.38 km) |
| San Marcos to Belle Glade (Florida) | 2,219.76 mi (3,572.36 km) |
| San Marcos to Bellefontaine (Ohio) | 1,903.51 mi (3,063.40 km) |
| San Marcos to Bellefontaine Neighbors (Missouri) | 1,550.27 mi (2,494.91 km) |
| San Marcos to Belleville (Illinois) | 1,561.40 mi (2,512.83 km) |
