Georgia and North Carolina, says Lattimore, are the leading candidates for the 6-foot, 210-pound tailback's last remaining official visit slot.
Lattimore plans to take two official visits during his senior season and the remaining three afterwards.
"When you break down the depth chart and everything, that's important, but it's going to come down to wherever I feel the most comfortable at and comfortable with the coaches," Lattimore said. "That's the main thing for me – if I feel comfortable there, that's where I'm going to go."
Lattimore, who has roughly 25 scholarship offers, says he's "really only focusing" on ten schools – Clemson, Duke, Florida State, Georgia, LSU, Maryland, Michigan, UNC, Penn State, and South Carolina.
"I haven't visited all of them yet, but those are places I feel comfortable at when I went there," Lattimore said. "I haven't been to LSU, but it's been a long time favorite of mine. Penn State, I haven't visited, but I know they have a good program and always have good success and good college running backs."
Lattimore has unofficially visited Clemson, Georgia, Florida State, UNC, and South Carolina.
Since last fall, Lattimore has visited UNC four times.
"I just had to get another feel for it every time," Lattimore said. "That's a place where I feel comfortable at… I'm probably going back up there before the season starts."
Furthermore, Lattimore has frequented UNC because of his strong feelings for the school.
"I think they're going to bring their program up," Lattimore said. "That's one of my schools that I'm looking at real hard, because it's not that far away, they run a pro style offense, they've had great tailback success, and a great head coach – Butch Davis."
Lattimore says he's developed a solid relationship with John Blake, his UNC primary recruiter.
"We talk almost every week," Lattimore said. "We don't even talk about football really; we just talk about everything. He's just a good guy to talk to. I really feel comfortable talking to him… It's just a great relationship. My mom likes him."
For the last two seasons, Lattimore has provided Byrnes High's highly acclaimed passing attack with balance.
"A lot of people focus on defending the pass and we just gave him the football," Byrnes head football coach Chris Miller said. "… We spread it out, [the opponent] plays the pass, and we give it to him."
Miller says Lattimore is a balanced ‘back that will excel in any offensive scheme.
"He's got the speed to get out in the open, but he's also got the strength to break tackles," Miller said. "He's got the mobility, quickness, and the moves."
Miller believes Lattimore's abilities begin with his attitude off the field.
"The biggest thing about Marcus is just his work ethic," Miller said. "He comes in here everyday, he's got a great attitude, and he's just ready to go to work. He doesn't make any excuses, he doesn't whine – he just comes in here and is ready to go. Whatever we've got to do, he's doing it and trying to make sure everybody else is doing it, too."
Following last season, which ended in a state championship for Byrnes, Lattimore was named the Gatorade' South Carolina Player-of-the-Year and Area Player-of-the-Year. He was also named to the Associated Press' All-State, the All-Region, and the All-Area teams.
Lattimore finished his junior season with 2,314 yards and 30 touchdowns on 305 carries (7.6-average). He also caught 33 passes for 393 yards.
As a sophomore, Lattimore accumulated 1,884 yards and 26 touchdowns on the ground, and caught 41 passes for 441 yards and four scores.
Lattimore has already been selected to the U.S. Army All-American Bowl.