| San Marcos to Lombard (Illinois) | 1,698.39 mi (2,733.29 km) |
| San Marcos to Lomita (California) | 80.07 mi (128.85 km) |
| San Marcos to Lompoc (California) | 216.50 mi (348.43 km) |
| San Marcos to London (Ohio) | 1,918.45 mi (3,087.45 km) |
| San Marcos to Lone Tree (Colorado) | 813.85 mi (1,309.76 km) |
| San Marcos to Long Beach (California) | 73.28 mi (117.94 km) |
| San Marcos to Long Beach (Mississippi) | 1,651.88 mi (2,658.44 km) |
| San Marcos to Long Beach (New York) | 2,434.11 mi (3,917.33 km) |
| San Marcos to Long Branch (New Jersey) | 2,417.74 mi (3,890.98 km) |
| San Marcos to Longmont (Colorado) | 825.84 mi (1,329.06 km) |
| San Marcos to Longview (Texas) | 1,299.46 mi (2,091.28 km) |
| San Marcos to Longview (Washington) | 949.60 mi (1,528.23 km) |
| San Marcos to Longwood (Florida) | 2,135.16 mi (3,436.21 km) |
| San Marcos to Lorain (Ohio) | 1,992.02 mi (3,205.85 km) |
| San Marcos to Lorton (Virginia) | 2,250.62 mi (3,622.03 km) |
