Academic Calendar

Main Campus Calendars By Topic

Other CU Calendars

Main Campus Key Dates

These dates apply to full-semester CU Boulder Main Campus classes.
For all other classes, see "Other CU Calendars" above.
To view unabridged academic calendars, click the PDF links on the right.

Revised Academic Calendar

CU Boulder’s new academic calendar takes effect Fall 2025. For more information and FAQs, see revised academic calendar.

Spring 2025

Summer 2025

Fall 2025

Spring 2026

Summer 2026

Fall 2026