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100 Mile Challenge

100 Mile Challenge

May 29 – September 5

Walk, run, hike, paddle, or pedal—or any combination of any human-powered activity—100 miles in 100 days to celebrate 100 years of ADK!

Raise $100 or more in sponsorships, and win a 100 Mile Challenge patch. Additional prizes will be awarded to the three people who raise the highest amounts, and to those who reach the following sponsorship levels: $100, $250, $500, and $1000.

Accept the Challenge and Register Today!


Join Our Team!

ADK is now accepting applications for summer seasonal positions. Spend the summer working in the high peaks and get your foot in the door of a career in the outdoors.

Thank You For A Fantastic Centennial Year

With your support, we've enjoyed growth, stewardship success, and outdoor adventure in our Centennial year. Read more about what you made possible in 2022.

Cascade Welcome Center Re-Opens for Winter

Join us for our winter season grand opening weekend, beginning Friday, November 11. Get expert advice, information, and gear.

Support ADK Education

Your support today ensures that ADK reaches more children and continues to inspire the next generation of land stewards and advocates.