COSine — Jan 23–25, 2026 in CO

COSine2026.Coloradospringssciencefictionconvention. January 23-25,2026. Guest of Honor Cory DoctorowScienceFictionAuthor (Picks and Shovels, The Lost Cause, many others), Activist, Journalist.

Category: scifi

Dates: Jan 23–25, 2026

Location: CO

Official site: https://www.firstfridayfandom.org/cosine

Plan your visit on HallPass — browse the full schedule, track your budget, plan cosplays, and coordinate meetups.