| San Marcos to Beacon (New York) | 2,417.14 mi (3,890.02 km) |
| San Marcos to Bear (Delaware) | 2,330.13 mi (3,749.97 km) |
| San Marcos to Beatrice (Nebraska) | 1,230.68 mi (1,980.59 km) |
| San Marcos to Beaufort (South Carolina) | 2,106.76 mi (3,390.50 km) |
| San Marcos to Beaumont (California) | 54.58 mi (87.84 km) |
| San Marcos to Beaumont (Texas) | 1,368.54 mi (2,202.45 km) |
| San Marcos to Beaver Dam (Wisconsin) | 1,683.58 mi (2,709.46 km) |
| San Marcos to Beavercreek (Ohio) | 1,884.67 mi (3,033.09 km) |
| San Marcos to Beaverton (Oregon) | 903.99 mi (1,454.83 km) |
| San Marcos to Beckley (West Virginia) | 2,038.03 mi (3,279.89 km) |
| San Marcos to Bedford (Indiana) | 1,751.45 mi (2,818.69 km) |
| San Marcos to Bedford (Ohio) | 2,025.18 mi (3,259.21 km) |
| San Marcos to Bedford (Texas) | 1,159.73 mi (1,866.40 km) |
| San Marcos to Bedford Heights (Ohio) | 2,026.83 mi (3,261.87 km) |
| San Marcos to Beech Grove (Indiana) | 1,777.29 mi (2,860.28 km) |
