Slim Gauge Guild Model Railroad Club - Two layouts located in a 2000 square foot basement in Pasadena, CA. The HOn3 layout is based on the Denver and Rio Grande Railroad and the Rio Grande Southern. On the HOn3 layout we tend to model specific prototype scenes. - http://www.slimgaugeguild.com/
Coachella Valley Model Railroaders, Inc. - Models in HO scale and HOn3 and includes over 1800 feet of track, with full scenery and animation. - http://www.cvmrr.com
Ntrak Express Model Railroad Club - An N-scale modular club. Includes event photos and meeting schedules. - http://www.ntrakexpress.com
Santa Susana Railroad Historical Society - A group located in Los Angeles and Ventura counties who belong to the Rancho Simi Foundation, a non-profit organization dedicated to the restoration of our 1903 Southern Pacific Model #22 depot. - http://www.trainweb.org/ssmrc/index.htm
Frisco Modelers' Information Group - Railroad historical society dedicated to the preservation of the history of the Saint Louis and San Francisco Railroad (SLSF), also known as the Frisco. - http://www.frisco.org/
Antelope Valley Model Railroad Club - HO scale display layout having prototypical train operations and scenic details familiar to California. Located in Lancaster. - http://www.avmrc.av.org/home.html
Napa Valley Model Railroaders - Home of the Napa Valley Northern, a large HO scale model railroad located in the Napa Valley. - http://www.nvmrc.org
Walnut Creek Model Railroad Society - Diablo Valley Lines home page, tour of layout, events, web resources and holiday show. - http://www.wcmrs.org/index.html
Glendale Model Railroad Club - Website of the Glendale Model Railroad Club. Contains history, description, and pictures of layout. - http://www.gmrrc.org/
Golden Gate Model Railroad Club - Located in the Randall Museum in San Francisco, the club boasts a HO scale model representing the engineering and geographical features of railroads found in California. - http://www.ggmrc.org/
California Southern Model Railroad Club - HO scale club located in Norwalk. Meets Tuesday evening and the public is always welcome. - http://www.trainweb.org/calsomrr