PACMUN began as a student run conference in 2014. The idea was conceived by seven extraordinary students to make a universally accessible MUN conference to all students in the Pacific Northwest. PACMUN is the first student-run conference in Washington State, and it its inaugural year, it became the largest conference in the state. The conference has grown since then, with the leadership of new secretariats and the guidance from years past.

Educational Model United Nations (EDUMUN) is a conference primarily designed to teach new delegates and improve the skills of returning delegates. EDUMUN is comprised of seminars and mock committees which keep delegates engaged. Beginning in 2015, EDUMUN has grown from a conference of 100 delegates to nearly 300 in 2017. With its positioning at the very start of the MUN year, EDUMUN hopes to prepare each delegate for all of their conferences for the year.

King County Model United Nations (KINGMUN) began as a smaller, more focused alternative to larger student run conferences in the Pacific Northwest in the spring of 2016. In the years since, KINGMUN has blossomed into a primary conference serving students in the Pacific Northwest during the spring season.

Seattle Model United Nations started as a conference that pays homage to the Seattle area by providing students on the west side of Washington state a local two day conference. Over the few years, SeattleMUN has grown to be a well recognized conference in the regional model united nations community as it is held during the late winter each year since its inception back in 2019.