| San Marcos to Allison Park (Pennsylvania) | 2,103.88 mi (3,385.88 km) |
| San Marcos to Allouez (Wisconsin) | 1,741.27 mi (2,802.30 km) |
| San Marcos to Aloha (Oregon) | 905.88 mi (1,457.87 km) |
| San Marcos to Alpena (Michigan) | 1,969.32 mi (3,169.31 km) |
| San Marcos to Alpharetta (Georgia) | 1,886.26 mi (3,035.64 km) |
| San Marcos to Alpine (California) | 31.39 mi (50.51 km) |
| San Marcos to Alpine (Utah) | 587.64 mi (945.71 km) |
| San Marcos to Alsip (Illinois) | 1,709.84 mi (2,751.72 km) |
| San Marcos to Altadena (California) | 91.60 mi (147.41 km) |
| San Marcos to Altamont (Oregon) | 673.56 mi (1,083.99 km) |
| San Marcos to Altamonte Springs (Florida) | 2,133.29 mi (3,433.20 km) |
| San Marcos to Alton (Illinois) | 1,555.48 mi (2,503.30 km) |
| San Marcos to Alton (Texas) | 1,224.51 mi (1,970.66 km) |
| San Marcos to Altoona (Iowa) | 1,421.44 mi (2,287.58 km) |
| San Marcos to Altoona (Pennsylvania) | 2,185.63 mi (3,517.43 km) |
