Seattle Mountaineers Adventure Club

Seattle Mountaineers Adventure Club

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

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 that MAC Members must be 14 years old by January of the year that they join.

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, whitewater rafting, hiking, car and snow-cave camping, cross-country skiing, and mountaineering. While attendance at all meetings is not required, the more meetings and outings attended, the more rewarding the program!

MAC Calendar

Ready to Join MAC?

In order to build a cohesive community, MAC registration is available only in September and January.

Check back in August for our 2018-2019 survey. 

Note: both the MAC youth and a parent need to be available to complete the survey.

Even if you are 100% sure you want to be in MAC this year, or even if you are a returning member, we still need you to fill out the survey.

Once you've completed the survey, a Mountaineers staff member will follow up with you to answer any questions before you register. Please also sign up for the Kickoff Meeting on September 26. Parents should plan to attend the kickoff meeting, as we will have a separate parent meeting to answer any lingering questions and help you understand the program.

Register for the  Kickoff Meeting

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

Great! Then let's go ahead and get started (but do make sure you also fill out the survey)

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

Our Mountaineers Adventure Club is open to all youth aged 14 and over, and we welcome new members in September and January (youth must turn 14  by January of the school year in which they join to be eligible).  

Email our member services team at  with questions or for more information.

PLEASE NOTE: MAC membership is $285 the first month, and $110 each month after. No dues will be collected in the month of September. 

Participants must enroll online. Payment is due by the 5th of each month. Because MAC is a year-round program, Participants can only enroll in September (by October 1) and January (by February 1). See payment forms for cancellation policy details.