Colossalcon 2025 Sandusky. Taking place at the kalahari resort in sandusky, ohio, this event promises to be an. Colossalcon.5 returns in 2025 on saturday august 3, 2025 from 11:00pm until 6:00am on august 4th!

Mark your calendars and make lasting memories at this extraordinary. Colossalcon 2025 will be held at: