COSine 2025 Information


COSine 2025

COSine 2025
January 24-26, 2025
Embassy Suites by Hilton Colorado Springs
Colorado Springs, CO

Science Fiction Convention

COSine has been held in Colorado Springs since 2004, and features numerous sci-fi and fantasy authors, artists, and fans, as well as panels, art show, author signing & reception, gaming, science & technology, dealers room, kids' programming, liquid nitrogen ice-cream, and more!

Registration Information

Advance Rates
$50 through October 31, 2024
$55 through January 10, 2025
At-Door Rates
$60: All 3 Days
$25: Friday
$35: Saturday
$25: Sunday

Previous/Future Events

COSine 2025  —  January 24-26, 2025
COSine 2024  —  January 19-21, 2024
COSine 2023  —  January 20-22, 2023
COSine 2022  —  January 14-16, 2022
COSine 2020  —  January 17-19, 2020
COSine 2019  —  January 18-20, 2019
COSine 2018  —  January 19-21, 2018
COSine 2017  —  January 20-22, 2017
COSine 2016  —  January 22-24, 2016
COSine 2015  —  January 23-25, 2015

Update COSine 2025 Information

Last updated: October 21, 2024