International Mountain Day

Next celebratedFriday, December 11, 2026

Celebrate International Mountain Day with a hike, climb, or trek - explore nature's beauty and challenge yourself to reach new heights!

See how to celebrate

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Last updated February 7, 2026 · by the Holiday Calendar TeamHave an update or spot an error?

YEARLY DATEDecember 11

OBSERVED INInternationally

CATEGORYNature

SUBCATEGORYConservation

INTRO

Introduction

Get ready to celebrate International Mountain Day on December 11! This day was established in 2003 by the United Nations General Assembly, as a way to recognize and appreciate the importance of mountains around the world. Mountains are home to many species of plants and animals, provide water resources for billions of people and act as barriers against climate change.

TIMELINE

International Mountain Day Timeline

UNESCO Mountain Biosphere Reserves

The Man and the Biosphere Programme (MAB) is launched by UNESCO to establish Mountain Biosphere Reserves, focusing on preserving biodiversity in mountainous regions.

Rio Earth Summit Recognition

The Rio Earth Summit recognizes the vulnerability of mountain ecosystems and includes specific language regarding the preservation and sustainable development of mountainous regions in Agenda 21.

International Year of Mountains

The United Nations designates 2002 as the International Year of Mountains to increase awareness and knowledge about the importance of mountains to life.

First International Mountain Day

Following the success of 2002's International Year of Mountains, the United Nations General Assembly establishes December 11 as International Mountain Day.

Mountains in the Post-2015 Development Agenda

The Mountain Partnership advocates for the inclusion of mountains in the Post-2015 Development Agenda, recognizing them as key to sustainable development.

Mountain Sustainability in UN Agenda

The United Nations includes mountain regions in its Sustainable Development Goals, acknowledging their vital role in providing key ecosystem services and promoting sustainable development.

GET INVOLVED

How to Celebrate International Mountain Day

Go on a mountain hike

Get out and explore the mountains by taking a hike or going on a nature walk and take in the beauty of the mountains.

CAMP

Camp in the Mountains

Pack up your camping gear and head to the mountains for an adventure. Enjoy the fresh air, peace, and serenity of camping in the mountains.

TAKE

Take a mountain biking tour

Head out to the nearest mountain range and take a mountain biking tour. Enjoy the thrill of riding down mountains while taking in all of its beautiful scenery.

ROCK

Rock climb

Challenge yourself by going rock climbing in the mountains. Whether you are a beginner or an expert, there are plenty of places to find routes that suit your skill level.

Go skiing or snowboarding

Hit up the slopes this International Mountain Day and go skiing or snowboarding! Enjoy some wintertime fun with friends or family as you take in all that the mountains have to offer.

WHY THIS DAY MATTERS

Why We Love International Mountain Day

Mountain air is rejuvenating

One of the best part about visiting the mountains is stepping out into the crisp mountain air. Taking a deep breath of clean fresh air can be incredibly revitalizing and relaxing - making it a great place to escape from the hustle and bustle of everyday life.

Mountains are majestic

There's something so awe-inspiring about looking up at a mountain range. The beauty of the soaring peaks and sprawling valleys can take your breath away. Plus, the change in elevation creates a diverse landscape that can offer something new to explore every time you visit!

Mountains provide recreational opportunities

From skiing and snowboarding in the winter to hiking and camping in the summer, there are countless ways to enjoy and explore the great outdoors when visiting a mountain. Whether you're an experienced outdoor enthusiast or a novice looking for a weekend getaway, there's an activity for everyone!

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