He completed his prep career at private Germantown Academy before enrolling as a student at the University of Georgia.

As an unattached junior athlete, Garland won gold at the 2018 USATF U20 Championships in the decathlon scoring 7562 points.

At the USA World Championship Trials in June 2022, Garland finished second in the decathlon with a collegiate record and personal best score of 8720.

[3] Garland was selected to compete at the 2022 World Athletics Championships held in Eugene, Oregon.

Garland placed in the top 10 after the shot put, long jump and 100 meters events before ultimately finishing eleventh on his senior major championship debut, which was won by world-record holder Kevin Mayer of France.