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 took effect Fall 2025. For more information and FAQs, see revised academic calendar.

Summer 2026

Fall 2026

Spring 2027

Summer 2027

Fall 2027

Spring 2028

Summer 2028

Fall 2028

Spring 2029