Seattle Mountaineers Adventure Club

Seattle Mountaineers Adventure Club

Seattle MAC is a year-round outdoor adventure program for youth aged 14-18.

COVID-19 FALL UPDATE: The MAC program is HAPPENING IN a MODIFIED VERSION THAT ALIGN WITH THE MOUNTAINEERS' COVID-19 PROTOCOLS. in seattle we are splitting mac into smaller pods. you will be going on trips with those in your pod to reduce the exposure to as many families. THIS MAY also MEAN MOVING MORE ACTIVITIES OUTDOORS, AMONG OTHER MORE MINOR MODIFICATIONS.

Youth-Driven, Staff-Supported

The Mountaineers Adventure Club (MAC) is a year-round outdoor adventure program for youth ages 14-18. Currently youth from more than 15 high schools - from Lake Stevens to West Seattle  to Bainbridge - make up MAC. Members meet monthly to plan outings and learn skills needed to participate. 

Note: MAC membership is $1,850  annually for students joining in the fall. Members will have the option of paying up front or paying the annual fee in a series of installments. This is an annual club.

Typical Outings

The youth members plan all of their outings, with guidance from adult advisers. From single-day outings to week-long camping trips, activities include rock climbing, backpacking, hiking, car and snow-cave camping, cross-country skiing, backcountry skiing, and mountaineering. While attendance at all meetings is not required, the more meetings and outings attended, the more rewarding the program!

MAC Calendar

The highlight of the year for many students is the 10-day long "Summer Trip", featuring alpine & multi-pitch climbing, mountaineering, cragging, hiking, backpacking, and great times in camp with lots of friends. Check out the photo album below of some of the highlights from 2019's summer trip!

North Cascades 2020

Ready to Join MAC?

Next enrollment period will be October, 2021. Enrollment is not guaranteed and limited spots will be available on a first-come, first-served basis. 

In order to build a cohesive community, MAC registration is available only in September and January, when space is available. Note: Youth must turn 14 years old by January of the school year in which they join to be eligible.

First - Sign up for the Seattle MAC Informational Seminar on September 2nd, 2021. Parents and students should plan to attend the info session, as we will pull parents aside for a meeting to answer any lingering questions and help you understand the program while the students get to know each other.

Register for the  New Member Meeting

Next, please take our interest survey which will help staff learn what members are interested in.

I'm 100% Sure I want to register for MAC this Fall

Great! Then let's go ahead and get started.

First - sign up for a Family Membership with us (here's a FAQ). 

Next - register for the info session and take the new member survey.

Later - After you've been to the info session and filled out the survey, follow instructions you will receive at the new member meeting to register, provided there is space available for you. 

Email MAC manager, Carl Marrs ( with questions or for more information.

PLEASE NOTE:  MAC membership is $1,850 in total for the year. All members will pay the 1st installment of annual dues upon registering for the course. Members may then choose to pay the balance remaining in a series of installments or all at once.

Participants must enroll online. Payment is due by the 10th of the final month of each quarter (December, March, June). Because MAC is a year-round program, Participants can only enroll in September & October (by October 31) and January (by February 1). See payment forms for cancellation policy details.