Editing Rocky Mountain Athletic Conference (section)

===Membership timeline===
A total of 54 different schools have been associated with the RMAC, either through full or associate membership. Of those schools, only Colorado Mines has been with the conference every year since it was founded in 1909.

<timeline>
DateFormat = yyyy
ImageSize = width:900 height:auto barincrement:20
Period = from:1909 till:2034
TimeAxis = orientation:horizontal
PlotArea = right:5 left:5 bottom:20 top:5

Colors =
 id:line value:black
 id:Full value:rgb(0.63,0.88,0.755) # all sports
 id:FullxF value:rgb(0.88,0.755,0.63) # non-football
 id:AssocF value:rgb(0.88,0.63,0.63) # football-only
 id:AssocOS value:rgb(0.755,0.755,0.63) # associate

PlotData =
 width:15 textcolor:black shift:(5,-5) anchor:from fontsize:s

 bar:1 color:Full from:1909 till:1937 text:[[University of Colorado Boulder|Colorado]] (1909–1937)

 bar:2 color:Full from:1909 till:1910 text:[[Colorado College]] (1909–1910, 1914–1967)
 bar:2 color:Full from:1914 till:1967

 bar:3 color:Full from:1909 till:end text:[[Colorado School of Mines|Colorado Mines]] (1909–present)

 bar:4 color:Full from:1909 till:1937 text:[[Colorado State University|Colorado State]] (1909–1937)

 bar:5 color:Full from:1910 till:1937 text:[[University of Denver|Denver]] (1910–1937)
 bar:5 color:AssocOS from:1996 till:1997 text:(1996–1997)

 bar:6 color:Full from:1910 till:1937 text:[[University of Utah|Utah]] (1910–1937)

 bar:7 color:Full from:1910 till:1937 text:[[University of Wyoming|Wyoming]] (1910–1937)

 bar:8 color:Full from:1914 till:1937 text:[[Utah State University|Utah State]] (1914–1937)

 bar:9 color:Full from:1917 till:1959 text:[[Montana State University|Montana State]] (1917–1959)

 bar:10 color:Full from:1922 till:1937 text:[[Brigham Young University|BYU]] (1922–1937)

 bar:11 color:Full from:1923 till:1972 text:[[University of Northern Colorado|Northern Colorado]] (1923–1972)

 bar:12 color:Full from:1925 till:end text:[[Western Colorado University|Western Colorado]] (1925–present)

 bar:13 color:Full from:1948 till:1958 text:[[Idaho State University|Idaho State]] (1948–1958)

 bar:14 color:Full from:1956 till:end text:[[Adams State University|Adams State]] (1956–present)

 bar:15 color:AssocOS from:1967 till:1968 text:[[Colorado State University Pueblo|Colorado State–Pueblo]] (1967–1972, 1976–1990, 1996–present)
 bar:15 color:FullxF from:1968 till:1972 text:
 bar:15 color:Full from:1976 till:1978
 bar:15 color:FullxF from:1978 till:1979
 bar:15 color:Full from:1979 till:1985
 bar:15 color:FullxF from:1985 till:1990
 bar:15 color:FullxF from:1996 till:2008
 bar:15 color:Full from:2008 till:end

 bar:16 color:Full from:1967 till:1972 text:[[Emporia State University|Emporia State]] (1967–1972)

 bar:17 color:Full from:1967 till:1972 text:[[Fort Hays State University|Fort Hays State]] (1967–1972)
 bar:17 color:FullxF from:1989 till:1991 text:(1989–2012)
 bar:17 color:Full from:1991 till:2006
 bar:17 color:AssocOS from:2006 till:2012

 bar:18 color:Full from:1967 till:1990 text:[[Fort Lewis College|Fort Lewis]] (1967–present)
 bar:18 color:AssocOS from:1990 till:1994
 bar:18 color:Full from:1994 till:end

 bar:19 color:Full from:1967 till:1972 text:[[University of Nebraska Omaha|Nebraska–Omaha]] (1967–1972)

 bar:20 color:Full from:1967 till:1972 text:[[Pittsburg State University|Pittsburg State]] (1967–1972)

 bar:21 color:FullxF from:1967 till:1983 text:[[Regis University|Regis]] (1967–1983)
 bar:21 color:FullxF from:1996 till:end text:(1996–present)

 bar:22 color:Full from:1967 till:1986 text:[[Southern Utah University|Southern Utah]] (1967–1986)

 bar:23 color:Full from:1967 till:1972 text:[[Washburn University|Washburn]] (1967–1972)

 bar:24 color:Full from:1967 till:1984 text:[[Western New Mexico University|Western New Mexico]] (1967–1990)
 bar:24 color:FullxF from:1984 till:1985
 bar:24 color:Full from:1985 till:1990
 bar:24 color:Full from:2006 till:2016 text:(2006–2016)

 bar:25 color:Full from:1967 till:1979 text:[[Westminster University (Utah)|Westminster (Utah)]] (1967–1979)
 bar:25 color:FullxF from:2015 till:end text:(2015–present)

 bar:26 color:Full from:1968 till:1969 text:[[New Mexico Highlands University|New Mexico Highlands]] (1968–1969, 1974–1988, 1990–present)
 bar:26 color:FullxF from:1974 till:1976
 bar:26 color:Full from:1976 till:1988
 bar:26 color:FullxF from:1990 till:1992
 bar:26 color:Full from:1992 till:end

 bar:27 color:Full from:1975 till:end text:[[Colorado Mesa University|Colorado Mesa]] (1975–present)

 bar:28 color:FullxF from:1989 till:1991 text:[[Chadron State College|Chadron State]] (1989–present)
 bar:28 color:Full from:1991 till:end

 bar:29 color:FullxF from:1989 till:1990 text:[[Wayne State College|Wayne State]] (1989–1990)

 bar:30 color:FullxF from:1989 till:1990 text:[[University of Nebraska at Kearney|Nebraska–Kearney]] (1989–1990, 1994–2012, 2014–present)
 bar:30 color:FullxF from:1994 till:1996
 bar:30 color:Full from:1996 till:2012
 bar:30 color:AssocOS from:2014 till:end

 bar:31 color:FullxF from:1996 till:end text:[[Colorado Christian University|Colorado Christian]] (1996–present)

 bar:32 color:FullxF from:1996 till:end text:[[Metropolitan State University of Denver|Metro State]] (1996–present)

 bar:33 color:AssocOS from:1996 till:1997 text:[[University of Colorado Colorado Springs|UCCS]] (1996–present)
 bar:33 color:FullxF from:1997 till:end

 bar:34 color:AssocOS from:1997 till:2024 text:[[San Francisco State University|San Francisco State]] (1997–2024)

 bar:35 color:AssocOS from:2007 till:2013 text:[[Grand Canyon University|Grand Canyon]] (2007–2013)

 bar:36 color:AssocOS from:2007 till:2015 text:[[Montana State University Billings|Montana State–Billings]] (2007–2015)

 bar:37 color:AssocOS from:2008 till:2013 text:[[University of the Incarnate Word|Incarnate Word]] (2008–2013)

 bar:38 color:AssocOS from:2008 till:2013 text:[[University of Texas Permian Basin|Texas–Permian Basin]] (2008–2013, 2022–present)
 bar:38 color:AssocOS from:2022 till:end 

 bar:39 shift:(-30) color:AssocOS from:2009 till:2012 text:[[Minnesota State University Moorhead|Minnesota State–Moorhead]] (2009–2012)

 bar:40 color:AssocOS from:2009 till:2012 text:[[Northern State University|Northern State]] (2009–2012)

 bar:41 color:Full from:2012 till:end text:[[Black Hills State University|Black Hills State]] (2012–present)

 bar:42 color:AssocOS from:2013 till:2018 text:[[California Baptist University|California Baptist]] (2013–2018)

 bar:43 color:AssocOS from:2013 till:2019 text:[[Lindenwood University|Lindenwood]] (2013–2019)

 bar:44 color:AssocOS from:2013 till:2019 text:[[Rockhurst University|Rockhurst]] (2013–2019)

 bar:45 shift:(-35) color:AssocOS from:2014 till:2015 text:[[South Dakota School of Mines and Technology|South Dakota Mines]] (2014–present)
 bar:45 color:FullxF from:2015 till:2016
 bar:45 color:Full from:2016 till:end

 bar:46 color:AssocF from:2016 till:2018 text:[[Utah Tech University|Dixie State]] (2016–2020)
 bar:46 color:Full from:2018 till:2020

 bar:47 color:AssocOS from:2016 till:2017 text:[[Maryville University|Maryville]] (2016–2017)

 bar:48 shift:(-35) color:AssocOS from:2016 till:2020 text:[[Oklahoma Baptist University|Oklahoma Baptist]] (2016–2020)

 bar:49 shift:(-45) color:AssocOS from:2017 till:end text:[[Oklahoma Christian University|Oklahoma Christian]] (2017–present)

 bar:50 shift:(-45) color:AssocOS from:2023 till:end text:[[Concordia University Irvine|Concordia–Irvine]] (2023–present)

 bar:51 shift:(-45) color:AssocOS from:2023 till:end text:[[Simon Fraser University|Simon Fraser]] (2023–present)

 bar:52 shift:(-45) color:AssocOS from:2023 till:end text:[[Texas Woman's University|Texas Woman's]] (2023–present)

 bar:53 shift:(-45) color:AssocOS from:2024 till:end text:[[Dominican University of California|Dominican (CA)]] (2024–present)

 bar:54 shift:(-45) color:AssocOS from:2025 till:end text:[[Northwest Nazarene University|Northwest Nazarene]] (2025–future)



ScaleMajor = gridcolor:line unit:year increment:5 start:1910
</timeline>

{{bg|#A0E0C0|&nbsp;Full member (all sports)&nbsp;}}
{{bg|#E0C0A0|&nbsp;Full member (non-football)&nbsp;}}
{{bg|#E0A0A0|&nbsp;Associate member (football-only)&nbsp;}}
{{bg|#C0C0A0|&nbsp;Associate member (sport)&nbsp;}}