Aug
14
Thursday, August 14to
Sunday, August 17, 2025
Gaylord National Harbor
Oxon Hill, MD
75°
The average temperature in Maryland is 75°F in August.
About
Once Upon a Con is the first ever fantasy book convention, held at the Gaylord National Harbor in Maryland. Immerse yourself in your favorite bookish worlds with over 250 vendors and guest authors, exciting panels and workshops, TTRPG room, fandom cosplay meetups, our own Starfall Masquerade and High Fantasy Fashion Show, and so much more! Are you ready to Fall into Fantasy with us in 2025?
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Last updated: 2025-08-03
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