The Cain Travel Group of Boulder, Inc. (Cain) is a certified Woman Owned Small Business (WOSB) and Woman Business Enterprise (WBE), founded in 1985 by Linda Cain (CEO) with active involvement from her son, Michael (President). Cain has become one of the 25 largest Travel Management Companies (TMCs) in the United States, according to Travel Weekly (June 2025), and ranks among the largest privately held TMCs in the country.