Continental Indoor Soccer League ended in 1997.
World Indoor Soccer League ended in 2001.
Continental League ended in 1960.
National Indoor Football League ended in 2008.
World Indoor Football League ended in 1988.
Indoor Professional Football League ended in 2001.
Continental Football League ended in 1969.
Continental Baseball League ended in 2010.
Japan Soccer League ended in 1992.
Xtreme Soccer League ended in 2009.
International Soccer League ended in 1965.
Click on the 'Indoor Soccer Field Diagram' link on this page to see a diagram of an indoor soccer field. The diagram is all the way at the end of the document. You will need Adobe reader to view the document.
The soccer season usually last from spring to the end of fall. Some people like myself do it year round, including indoor during the winter.