Leake was born in The Bronx, New York and moved to Greensboro, North Carolina while in middle school and attended Walter Hines Page Senior High School. He became the Pirates' starting running back as a sophomore and rushed for 456 yards and five touchdowns. He was named first team All-Area by the Greensboro News & Record after rushing 277 times for 2,048 yards and 30 touchdowns while gaining 356 yards and scoring four touchdowns on 21 receptions as a junior. As a senior, Leake gained 1,679 yards and scored 29 touchdowns on 216 carries despite missing time due to an ankle injury and was again named first team All-Area and first team All-State by USA Today. Rated a three-star recruit, Leake committed to play college football at Maryland over offers from Louisville, Nebraska, North Carolina, South Carolina, Tennessee and Virginia Tech.
College career
Leake served as a kick returner and backup running back as a true freshman, rushing nine times for 99 yards and two touchdowns and returning 13 kicks for 274 yards. He rushed 34 times for 309 yards and a team-leading seven rushing touchdowns and lead the team with 409 kickoff return yards and one kick returned for a touchdown during his sophomore year. Leake became the first player in Big Ten Conference history to be named the Offensive and Special TeamsPlayer of the Week for the same game after he rushed for 140 yards and three touchdowns and returned a kick 97 yards for a fourth score against Illinois. Leake had an expanded role on offense as a junior, sharing primary running back duties with Anthony McFarland Jr., and rushed 102 times for 736 yards and eight touchdowns while also leading the Big Ten and finishing third in the nation with 804 kickoff return yards on 30 returns with two touchdowns and was named first team All-Big Ten as a return specialist and the Rodgers-Dwight Return Specialist of the Year. He was named the Big Ten Special Teams Player of the Week two times after returning a kick 100 yards for a touchdown against Rutgers on October 4, 2019 and for a 97 yard return touchdown against Michigan on November 4, 2019. Following the end of the season Leake announced that he would be forgoing his final year of eligibility to enter the 2020 NFL draft.