Born in Pasadena, California, Glad moved with his family to Seattle before finally settling in Tucson, Arizona, where he grew up playing soccer.

[3] He made his professional debut in April 2015 for USL affiliate club Real Monarchs SLC and scored his first goal in a 1–1 draw against Portland Timbers 2.

Glad became a regular starter with Real Salt Lake in 2016, starting 27 MLS matches, and was named the RSL 2016 defender of the year.

Glad was one of numerous young uncapped players called into the United States men's national soccer team January 2018 training camp in advance of a friendly against Bosnia and Herzegovina.

[5] Glad was named to the final 20-player United States under-23 roster for the 2020 CONCACAF Men's Olympic Qualifying Championship in March 2021.