Long-running conventions

The first sf convention was held in October 1936 in Philadelphia (see Early Conventions for a list of all conventions during the first ten years, as well as some difficulties of definition). Here's a list of all serial cons of which there have been fifty or more.

The Covid-19 epidemic caused the cancellation or postponement (not to mention switch to virtual) of many cons scheduled for 2020 and 2021.

Convention	Location	Started	Count	Notes
Worldcon	Earth (mostly US)	July 1939	79	not held during War years (in the US view, i. e. 1942–5)
Philcon	Philadelphia	Oct 1936	73?	Not quite clear as early history is not well documented. Per Fancyclopedia listing, it skipped 1941–5, 1949, 1951, 1953–5, 1985, 1995 and 2001
Eastercon	UK	Whitsun 1948	73	not held 1950–51, 2020 just had online bid session
Westercon	Western North America	Sept 1948	73	not held 2020
Midwestcon	Cincinnati	1949	71	including "Midwestcon 0"
Australian Natcon	Australia	Mar 1952	58	not held 1957, 1959–65, 1967–68, 2020–21
Lunacon†	New York City	May 1957	59	cancelled 1964, 2015 and 2018; no further since
DeepSouthCon	Old South	July 1963	59	Normally piggybacks on other cons.
Boskone	Boston	Sept 1965	59	There were five more Boskones in an early series in 1941–5, forgotten by the time the modern Boskone began. There were two in 1966.
Minicon	Minneapolis	Jan 1968	55	There were two in both 1971 and 1974. Not held 2020
MileHiCon	Denver	Nov 1969	53	began as OctoCon
ChambanaCon	Central Illinois	1971	50	not held in 2020

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Conrunning

This is a conrunning page.