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Recreation· Outdoor club

Mazamas

“Inspire people to love the mountains and advocate for their protection.”

Home groundPortland, OR
Founded1894
KindRecreation 501(c)(3)
Led byRebekah Phillips

Give to them ↗Every way to help ↓

The work

What they do

Portland-based mountaineering club with conservation advocacy. Works on Oregon Cascades wilderness and forest protections.

Every year they sign one sentence and file it with the federal government: “MAZAMAS PROMOTES MOUNTAINEERING THROUGH EDUCATION, CLIMBING, HIKING, FELLOWSHIP, SAFETY AND THE EXPLORATION & PROTECTION OF MOUNTAIN ENVIRONMENTS.”

Where the money went, FY2024

The work, and what it cost

Bringing people into the fight

$300K

LOCATED IN PORTLAND, OREGON, THE CARBON-NEUTRAL MAZAMA MOUNTAINEERING CENTER IS THE MAZAMAS HEADQUARTERS.

Read it as they filed it
FACILITIES:LOCATED IN PORTLAND, OREGON, THE CARBON-NEUTRAL MAZAMA MOUNTAINEERING CENTER IS THE MAZAMAS HEADQUARTERS. IT HOUSES OFFICES FOR STAFF, MEETING ROOMS AND CLASSROOMS, AN EXTENSIVE MOUNTAINEERING LIBRARY AND COLLECTION OF HISTORICAL ARCHIVES, AND A LARGE AUDITORIUM WITH EDUCATIONAL CLIMBING WALLS FOR CLASS ACTIVITY. CULTURAL AND SCIENTIFIC PRESENTATIONS ARE ALSO HELD IN THE FACILITYS AUDITORIUM.MAZAMAS ALSO OWNS A LODGE LOCATED IN GOVERNMENT CAMP, OREGON, THAT RESIDES ON U.S. FOREST SERVICE LAND. PARTICIPANTS IN MAZAMA EDUCATION PROGRAMS, MEMBERS, SKI CLUBS, AND OTHER NON-PROFIT ORGANIZATIONS INCLUDING YOUTH GROUPS IN THE PORTLAND, OREGON AREA USE THE FACILITY DURING THE YEAR. THE LODGE IS ALSO USED AS A BASE FOR MT. HOOD CLIMBS LED BY MAZAMAS. USERS ARE CHARGED A FEE TO COVER THE DIRECT COSTS OF LODGING AND MEALS.

IRS Form 990 Part III, fiscal year 2024, signed under penalty of perjury.

Keeping wilderness wild

$165K

MAZAMAS CONDUCTS EDUCATION IN MOUNTAINEERING, ROCK CLIMBING, ICE CLIMBING, BACKCOUNTRY SKIING, NORDIC SKIING, WILDERNESS FIRST AID, AND OTHER MOUNTAIN-RELATED OUTDOOR ACTIVITIES.

Read it as they filed it
EDUCATIONAL PROGRAMS:MAZAMAS CONDUCTS EDUCATION IN MOUNTAINEERING, ROCK CLIMBING, ICE CLIMBING, BACKCOUNTRY SKIING, NORDIC SKIING, WILDERNESS FIRST AID, AND OTHER MOUNTAIN-RELATED OUTDOOR ACTIVITIES. THE COURSES INCLUDE TECHNIQUES, SAFETY, AND ENVIRONMENTAL AWARENESS, AND CONSERVATION ETHICS. NON-MEMBERS MAY PARTICIPATE IN CLASSES OFFERED THROUGH MAZAMAS. MORE THAN 600 STUDENTS PARTICIPATE IN OUR EDUCATIONAL PROGRAMS ANNUALLY.

IRS Form 990 Part III, fiscal year 2024, signed under penalty of perjury.

Bringing people into the fight

$131K

INITIATIVES IN 2024 SUPPORTED MEMBER AND VOLUNTEER OUTREACH, ENGAGEMENT, AND EDUCATION, SPECIFICALLY THROUGH THE PUBLICATION OF A BIMONTHLY MEMBERSHIP MAGAZINE AND NEWSLETTERS, VOLUNTEER SERVICE AWARDS, AND OTHER VOLUNTE...

Read it as they filed it
DEVELOPMENT PROJECTS: INITIATIVES IN 2024 SUPPORTED MEMBER AND VOLUNTEER OUTREACH, ENGAGEMENT, AND EDUCATION, SPECIFICALLY THROUGH THE PUBLICATION OF A BIMONTHLY MEMBERSHIP MAGAZINE AND NEWSLETTERS, VOLUNTEER SERVICE AWARDS, AND OTHER VOLUNTEER RECOGNITION STRATEGIES.

IRS Form 990 Part III, fiscal year 2024, signed under penalty of perjury.

Pressing the policymakers

$123K

ACTIVITIES & EVENTS:MAZAMAS OFFERS ACTIVITIES INCLUDING HIKING, CLIMBING, BACKPACKING, AND LOCAL STREET RAMBLES LED BY VOLUNTEER LEADERS.

Including $3,000 granted onward.

Read it as they filed it
ACTIVITIES & EVENTS:MAZAMAS OFFERS ACTIVITIES INCLUDING HIKING, CLIMBING, BACKPACKING, AND LOCAL STREET RAMBLES LED BY VOLUNTEER LEADERS. PARTICIPATION IS OPEN TO THE PUBLIC AND SUBJECT TO THE PHYSICAL FITNESS REQUIRED FOR EACH ACTIVITY. PARTICIPANTS ARE NOT CHARGED A FEE FOR ACTIVITIES, EXCEPT FOR CLIMBS IN THE MT. HOOD NATIONAL FOREST. IN A TYPICAL YEAR, APPROXIMATELY 1,500 CLIMBERS PARTICIPATE IN OUR CLIMBING PROGRAM, 2,000 HIKERS PARTICIPATE IN OUR HIKING AND STREET RAMBLES PROGRAM, AND A FEW HUNDRED PARTICIPATE IN SPECIAL EVENTS. MAZAMA OUTINGS ARE ACTIVITIES THAT ARE FIVE DAYS OR LONGER. OUTINGS VARY IN SCOPE AND NUMBER FROM YEAR TO YEAR, DEPENDING ON VOLUNTEER LEADERSHIP. MOST OUTINGS INVOLVE HIKING, CLIMBING, BACKPACKING, TREKKING, OR SKIING, BUT SOME MAY INCLUDE IN-TOWN EXCURSIONS. ALTHOUGH MOST OUTINGS TAKE PLACE IN THE WESTERN UNITED STATES, SOME TRAVEL TO FOREIGN DESTINATIONS. LIKE OTHER ACTIVITIES, THEY ARE OPEN TO THE PUBLIC; PARTICIPANTS PAY FOR THEIR OWN TRAVEL AND ACCOMMODATIONS. MAZAMAS ALSO AWARDS GRANTS THAT HELP FUND CLIMBING EXPEDITIONS INTO HIGH OR REMOTE MOUNTAIN REGIONS OF THE WORLD. MAZAMAS OFFERS INFORMATIVE AND ENTERTAINING PROGRAMS THAT ARE HELD AT THE MAZAMA MOUNTAINEERING CENTER FOR THE COMMUNITY THROUGHOUT THE YEAR. THE OUTDOOR-ORIENTED PROGRAMS ARE FREE WITH A SUGGESTED DONATION, AND RANGE IN NATURE FROM FILM SCREENINGS TO RESEARCH AND ADVOCACY UPDATES TO PRESENTATIONS BY MISSION-ALIGNED PARTNER ORGANIZATIONS.

IRS Form 990 Part III, fiscal year 2024, signed under penalty of perjury.

Follow the dollar

72 cents of every dollar goes to the work

72¢
72¢ the work18¢ keeping the lights on10¢ finding the next member

Read it as a snapshot, not a scorecard. Splits move year to year with grants and campaigns, and healthy shops live all across this range.

$755,049 programs, $188,784 management, $108,895 fundraising. Form 990, FY2024.

The people

Who does the work

5paid staff
500volunteers last year
9board members
132years on the ground
Rebekah PhillipsExecutive DirectorSigned the 2025 federal filing as Executive Director

Succeeds Greg Scott in the officer table.

Rebekah PhilliipsExecutive Dir.Comp $105,360, FY2024

Honesty note: leadership comes from each year’s federal filing, so it can run a year behind. This one caught a changing of the guard in the act: the FY2024 officer table lists Greg Scott, the return itself is signed by Rebekah Phillips. Orgs that claim their page can update it same-day. Work at Mazamas? Claim this page.

Those 500 volunteers are people who decided this ground was theirs to defend. If Mazamas is fighting for your place too, the matchmaker will find your way in.

Make it 501

The filings

15 years of filings

15 years of filings

Total revenue by fiscal year, as filed. Point at the line for any year.

$2M$1.4M FY2420112024
Total revenue by fiscal year
YearRevenue
2011$952,931
2012$898,786
2013$1,312,479
2014$1,741,564
2015$1,023,484
2016$1,483,524
2017$2,173,813
2018$1,075,796
2019$1,189,418
2020$3,705,464
2021$1,071,077
2022$117,140
2022$766,043
2023$711,341
2024$1,405,909

From $953K in 2011 to $1.4M in FY24, across 15 public filings. The 2020 peak of $3.7M reads like one-time gifts, so trust the line, not the peak.

Stand with Mazamas

132 years on the ground, 500 volunteers, 72 cents of every dollar on the line. That is who is holding it. There is room for one more.

Sources and methodFinancials, headcounts, and program text: IRS Form 990, FY2024 and 14 prior filings via ProPublica Nonprofit Explorer, EIN 93-0408077. Leadership and compensation: Form 990 Part VII and the return’s signature block, FY2024 filing. Org-reported figures are always labeled. Data verified as of 2026-09-23. Nothing on this page is pay-to-play.