Trail Life USA (TLUSA or commonly Trail Life) is a faith-based Scout-like organization providing youth mentorship and character development to boys in the United States. The organization was founded in 2013 in reaction against the Boy Scouts of America (BSA) changing its membership policy to allow gay youth, adults, and scoutmasters in boy scout Troops. As of early 2024, Trail Life has grown to over 60,000 members.^{[citation needed]} All charters of Trail Life USA must pledge to follow its "Statement of Faith"; the organization is Trinitarian Christian. Youth of all or no religious backgrounds are allowed to join, but individual Charter Organizations may limit Troop membership to boys of a certain faith or membership in a certain organization.

In May 2013, Boy Scouts of America (BSA) voted to change its membership policy to allow youth of any sexual orientation. Following the vote, John Stemberger changed the mission of OnMyHonor.net to start a new alternative Scouting program to be the premier national character development organization for young men which "produces godly and responsible husbands, fathers, and citizens". OnMyHonor.net was a group formed by John Stemberger to oppose the proposed membership policy change in March 2013 and consisted of parents, Scoutmasters, Eagle Scouts and other Scouting leaders.

Following the vote, the Faith-Based Boys (FBB) was founded. In May 2013, American Heritage Girls (AHG) joined the FBB. FBB official Thomas Dillingham indicated that the group would start accepting applications in August for youth memberships and group leaders.

OnMyHonor.net, Faith Based Boys and other regional and national groups, TrailHead USA and Frontier Service Corps, joined to form the new group. A leadership meeting was held in Louisville, Kentucky on June 29, 2013, to discuss forming a new group. The AHG cofounder Patti Garibay was invited to the Kentucky meeting as an advisor. The organization would be based on the AHG program.

In a July 2013 interview, Stemberger said, "If a young man has a same-sex attraction he would not be turned away in the program, but he's not going to be allowed to kind of openly flaunt it and carry a rainbow flag", and stated, "we're going to focus on sexual purity, not sexual orientation". They will have a policy that "the proper context for sexual relations is only between a man and a woman in the covenant of marriage."

Walk Worthy (from Colossians 1:10)

Trail Life USA was formed in July 2013. On September 6–7, 2013, a national convention was held for the new group where chartering rules, programs, rankings, and uniforms were adopted and its name revealed. Over 300 names were considered for the new organization. The group selected Trail Life USA as its name and chose to start in January 2014 with an expected 1000 incubation troops formed by then. It was also revealed in September that Trail Life would be partnering with American Heritage Girls. During the national convention announcing Trail Life USA, Stemberger told the audience "Real men value truth over tradition," and "Real men value principle over program, and they value integrity over institutions."

In October 2013, Lutheran Church–Missouri Synod leaders indicated that member churches may affiliate with any Scouting program including Trail Life.