Mack, a 6-foot-4 offensive lineman from Little Rock (Ark.) Pulaski Academy, began his tour Thursday at UNC.
"[UNC] has a program that's really going to be up-and-coming." Mack said. "I know they've done really well, but the coaching staff is going to continue to improve that program by leaps and bounds. The facilities are going to be amazing in a few years."
On Friday, Mack visited Duke and then concluded his tour Saturday at Wake Forest.
While at UNC, Mack received an in-depth campus tour.
"We got to see all of the campus – all the academic buildings," Mack said. "We got to see the football and basketball facilities. We went through the basketball museum. We got to see all the new renovations that they're going to make for football, which is really impressive."
Mack also spent a great deal of time with Sam Pittman, UNC's offensive line coach.
"[We discussed] the recruiting process and [him] coming out for spring practice," Mack said. "He said he saw me more as an inside guy – a guard or, maybe if I learn how to snap, a center."
According to Mack, Pittman plans to visit Pulaski Academy during the Evaluation Period. Pittman's visit will coincide with Pulaski's spring practice and allow him to evaluate Mack in-person.
At Pulaski Academy, Mack starts at tackle, where he earned All-Conference and All-Metro honors as a junior. He did, though, start his entire sophomore season at guard.
Last season, Pulaski Academy went 13-1 and won the 5A State Championship.
Besides the three North Carolina schools, Mack has visited Arkansas, Boston College, and Vanderbilt. He will likely make a couple more visits after his spring practice.
In addition to Wake Forest, Mack has received scholarship offers from Arkansas, Boston College, Minnesota, Oregon, and Vanderbilt.
Mack says he doesn't have any favorite schools. He plans to narrow his list of choices down by the end of the summer and isn't sure when he'll make a verbal commitment.
"I'm definitely looking for a good match between academics and football," Mack said. "And I like a school that doesn't value football over academics and tries to graduate their kids and get them that degree."