Welcome to Acadia Mountain Guides Climbing School

Maine's Only Full Service Mountain Guiding School.

Your Adventure Starts Here

Avalanche Education Courses

Register for Winter 2023/24 Courses Now!

Your Adventure Starts Here

Katahdin Winter Ascents

2023/24 Courses Coming Soon!

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Rock Climbing in Acadia National Park

Now Booking for Summer 2023!

Your Adventure Starts Here


Since 1993 AMGCS has been providing climbing instruction and guiding to discerning clients from around the world. Our diversity of clients and programs speaks to the quality and value provided by our premium service. Acadia Mountain Guides Climbing School is Maine’s only full service climbing school. We are committed to sharing our passion for the mountains with you throughout the seasons from the shores of coastal Maine to the peaks of the world’s greatest ranges.

Avalanche Education

Yes, avalanches do happen in New England and each year a number of backcountry enthusiasts are injured or killed in New England from avalanches. Take your mountain knowledge to a level that helps you and your group make informed decisions in the backcountry regardless of where you travel. Take an AIARE avalanche course through Acadia Mountain Guides Climbing School!

We have AIARE courses running all winter! 

It matters who teaches your course! All of our wilderness medicine courses are instructed by school owner Jon Tierney. Jon is one of the nation’s most experienced wilderness medicine instructors with over 1000 teaching days and tons of real-life mountain rescue experience. He is a flight paramedic and an internationally licensed IFMGA mountain guide. Visit Jon’s bio for more info. If you can’t take one of our courses there are several other highly experienced WMAI instructors to choose from. Among the many wilderness medicine providers, we believe that WMAI has the highest standards for both becoming and maintaining instructor status and WMAI is the company we feel most comfortable recommending to clients.

Join us in Acadia National Park and beyond for an unforgettable experience. Any age and any experience can climb. Half day, full day, and evening sessions available. 

Acadia Mountain Guides Climbing School offers guided ice climbing across the Northeast from frozen sea spray to technical routes up Katahdin and Mount Washington. Half days available in Acadia National Park, Full days required for other locations.

Guillotine in Prime Conditions

Acadia Mountain Guides Climbing School is an American Mountain Guides Association and Professional Climbing Instructor Association accredited business. Owner Jon Tierney maintains an AMGA/IMFGA mountain guide certification, the highest level of guide certification in the US and internationally. Come climb with one of the most qualified guide services in the Northeast!

Learn More About PCIA Certification
Learn More About AMGA Certification