edit-a-thon (sometimes written editathon) is an organized event where editors of online communities such as Wikipedia, OpenStreetMap, and LocalWiki edit and improve a specific topic or type of content, typically including basic editing training for new editors. They often involve meetups, but can be distributed as well. The word is a portmanteau of "edit" and " marathon".
Wikipedia edit-a-thons have taken place at
Wikimedia chapter headquarters, accredited educational institutions including Sonoma State University, Arizona State University, Middlebury College, The  University of Victoria in Canada; as well as cultural institutions such as museums or archives. The events have included topics such as cultural heritage sites, museum collections, women's history, art, feminism, narrowing Wikipedia's gender gap, social justice issues, and other topics.      Women and African Americans and the  LGBT community are using edit-a-thons as a way of bridging the gap in Wikipedia's sexual and racial makeup, and to challenge the underrepresentation of Africa-related topics. 
Some have been organised by
Wikipedians in residence. The longest editathon took place at the Museo Soumaya in Mexico City from June 9 to 12, 2016, where Wikimedia Mexico volunteers and museum's staff edited during 72 continuous hours. This editathon was also recognized by Guinness World Records as the longest.  The OpenStreetMap community has also hosted a number of edit-a-thons.  
72 horas con Rodin
editathon in Mexico City is the longest ever held, recognized by
Guinness World Records
See also References
"Feminists Strengthen Wikipedia's Content about Women" . Retrieved . April 24, 2018
Lavin, Talia (2016-03-11). "A Feminist Edit-a-Thon Seeks to Reshape Wikipedia". The New Yorker. ISSN 0028-792X . Retrieved . 2016-07-30
Content, Sara Boboltz Associate Editor of Viral; Post, The Huffington (2015-04-15). "Editors Are Trying To Fix Wikipedia's Gender And Racial Bias Problem". The Huffington Post . Retrieved . 2016-07-30
"Social Justice Wikipedia Edit-a-thon workshop - University of Victoria". www.uvic.ca . Retrieved . 2016-07-30
Smith, Michelle R. (16 October 2013). "Female scientists getting their due on Wikipedia". Associated Press . Retrieved . 2016-07-30
Katzner, Ben (1 February 2014). "SCSU group participates in edit-a-thon for Wikipedia website". . Archived from St. Cloud Times the original on 2 August 2016 . Retrieved . 5 February 2014
Koh, Adeline (30 May 2013). "How to Organize Your Own Wikipedia Edit-a-Thon". The Chronicle of Higher Education . Retrieved . 5 February 2014
Reynosa, Peter. "Why Don't More Latinos Contribute to Wikipedia?". El Tecolote . Retrieved . December 4, 2015
^ Wexelbaum, Rachel S., Katie Herzog, and Lane Rasberry. "Queering Wikipedia." (2015).
"México ganó un nuevo récord Guinness y seguro te va a ser útil". Dinero en Imagen.com (in Spanish) . Retrieved . 2016-06-13
Cruz y Corro, Andrés; Fernanda López, María (22 July 2016). "Wikipedia edit-a-thon, 72 hours long, is recognized with a Guinness World Record". Wikimedia Blog . Retrieved . 2016-07-30
Villeda, Ian (12 April 2013). "OpenStreetMap #Editathon at MapBox" . Retrieved . 7 April 2014
Foster, Mike (18 October 2013). "Fall 2013 OpenStreetMap Editathon". Archived from the original on 8 April 2014 . Retrieved . 7 April 2014 CS1 maint: BOT: original-url status unknown (link) External links
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