International Mountain Day 2026

International Mountain Day is celebrated on December 11, 2026. The day was designated by the United Nations General Assembly in 2003, as they encouraged the international community to organize events at all levels on that day to highlight the importance of sustainable mountain development.

We have placed a detailed description of this event on this page: International Mountain Day 2025. For further information please stop by there!

More dates:

• International Mountain Day on Dec 11, 2025
• International Mountain Day on Dec 11, 2026
• International Mountain Day on Dec 11, 2027