The Endurance Fund appears to operate primarily as a funder of philanthropic infrastructure rather than direct program delivery, routing its nearly $6M in giving through community foundations and donor-advised vehicles. Its grants are large, centralized gifts — notably a multi-million dollar commitment to the Marin Community Foundation (for The Reliance Fund) and a similarly sized gift to Vanguard Charitable — suggesting the foundation prefers to enable local community grantmaking and donor-advised distribution rather than fund specific service providers directly.
The Endurance Fund’s clearest pattern is its use of philanthropic infrastructure to move money through community foundations and donor-advised vehicles. Two 2025 grants show that structure at scale: $3,335,743 to Marin Community Foundation for The Reliance Fund and $2,631,590 to Vanguard Charitable Program for General Support. Those commitments sit alongside a steady stream of smaller, place-based gifts that suggest the funder works through intermediaries as well as direct local partners. The foundation’s recent grantmaking includes repeated support for San Geronimo Valley Community Center in San Geronimo, California, where it has funded park work, council dinners, job training, and related community activities. It has also backed Environmental Action Committee in Point Reyes Station for watershed and birding-related work, and Pacific Forest Trust in San Francisco for watershed restoration and conservation in California. Other grants go to community institutions and charitable vehicles rather than only to service-delivery nonprofits. Across the recent record, The Endurance Fund appears to favor flexible, locally routed support and project-specific investments tied to community stewardship, convening, and conservation.
In philanthropic infrastructure, The Endurance Fund gave $60,000 to Vanguard Charitable Program for Facilitation of grant making and $25,000 to the same intermediary for the same purpose in 2025. It also made a $50,000 gift to Vanguard Charitable Program for The Meili Fund and another $50,000 for The Granite Fund, showing continued support for pooled or donor-advised giving vehicles. In community stewardship work, the foundation gave $50,000 to Environmental Action Committee for Western Watershed in 2024 and $25,000 to Pacific Forest Trust for Implementing Vital Watershed Restoration and Conservation in California in 2023. For local public space and community use, it supported San Geronimo Valley Community Center with $100,000 for Woodacre Park and $10,000 for Brush clearing on the new park. Its youth and education-related giving includes $20,400 for Job Training at San Geronimo Valley Community Center and $10,000 to Health-Connectedorg in East Palo Alto for #comprehensivesexed.
Typical grant size is modest relative to the foundation’s annual total: the 25th percentile is $500, the median is $1,525, and the 75th percentile is $6,419. That mix sits alongside a small number of very large awards, including multi-million-dollar transfers to philanthropic intermediaries. The recipient list also shows repetition: several organizations receive support across multiple years, especially San Geronimo Valley Community Center and Vanguard Charitable Program. The foundation funds individuals is false, and it makes no program-related investments. The pattern points to an organized grantmaking approach that uses both recurring partners and one-off project gifts.
$6.2M
$0
$463K
$6.3M
Most grants fall between $500 and $6K, with a median of $2K.
25th Percentile
$500
Median
$2K
75th Percentile
$6K
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Highly concentrated: two very large grants to intermediary organizations (community foundation and DAF provider). Likely pass-through or endowed support rather than numerous small direct-service grants; uses intermediaries to allocate funds.
Notable grantees: Marin Community Foundation (The Reliance Fund), Vanguard Charitable Program, The Reliance Fund (program at Marin Community Foundation)
Grant recipients are overwhelmingly in the United States, with all listed grants going to US-based organizations. California is the top state by grant count, and 74% of grants go to recipients in the foundation’s HQ state. Recent California recipients include Novato, San Geronimo, Point Reyes Station, San Francisco, and East Palo Alto. Outside California, the record includes Warwick and Southeastern, Pennsylvania, and West Harest Hartford, Connecticut, mainly through intermediary and institutional gifts.
It supports community foundations and donor-advised vehicles, local community institutions, environmental and conservation groups, and project-specific community efforts. Recent examples include a community foundation gift for The Reliance Fund, charitable-vehicle support through Vanguard Charitable Program, and grants for watershed restoration, park stewardship, job training, and comprehensive sex education.
The grant-size distribution is small on the middle of the scale: p25 is $500, median is $1,525, and p75 is $6,419. The recent record also includes a few much larger transfers, which makes the overall pattern more concentrated than the median alone suggests.
Yes. California is the main giving state, with 74% of grants going to recipients in the HQ state. The recent recipient list is entirely US-based, and California cities recur often, especially San Geronimo, Point Reyes Station, Novato, San Francisco, and East Palo Alto.
Recent grants point to philanthropic infrastructure, watershed restoration and conservation, park creation and stewardship, job training, and comprehensive sex education. The record also includes support for community events and convenings, such as council dinners and a birding festival.
Yes. Some organizations appear in multiple years, including San Geronimo Valley Community Center and Vanguard Charitable Program. That repetition suggests ongoing relationships rather than a purely one-time grant pattern.
2025
Source: IRS Form 990-PF, fiscal year 2025.
Most recent grants reported to the IRS.
| Recipient | Location | Amount | Year | Purpose |
|---|---|---|---|---|
| Marin Community Foundation | Novato, CA | $3,335,743 | 2025 | The Reliance Fund |
| Vanguard Charitable Program | Warwick, RI | $2,631,590 | 2025 | General Support |
| Vanguard Charitable Program | Southeastern, PA | $50,000 | 2025 | The Granite Fund |
| Vanguard Charitable Program | Warwick, RI | $50,000 | 2025 | The Meili Fund |
| San Geronimo Valley Community Cente | San Geronimo, CA | $26,091 | 2025 | Council Dinner |
| Vanguard Charitable Program | Warwick, RI | $25,000 | 2025 | Facilitation of grant making |
| San Geronimo Valley Community Cente | San Geronimo, CA | $18,900 | 2025 | Job Training |
| San Geronimo Valley Community Cente | San Geronimo, CA | $16,100 | 2025 | Job Training |
| Health-Connectedorg | East Palo Alto, CA | $10,000 | 2025 | #comprehensivesexed |
| Kingswood-Oxford School | West Harest Hartford, CT | $10,000 | 2025 | Annual Fund |
| San Geronimo Valley Community Cente | San Geronimo, CA | $7,100 | 2025 | VAST |
| San Geronimo Valley Community Cente | San Geronimo, CA | $6,225 | 2025 | VAST |
| Marin Agricultural Land Trust | Point Reyes Station, CA | $5,000 | 2025 | General Support - Stewardship |
| Pomona College | Claremont, CA | $5,000 | 2025 | Annual Fund |
| Branson School | Ross, CA | $5,000 | 2025 | Annual Fund |
| San Geronimo Valley Emergency Fund | San Geronimo, CA | $5,000 | 2025 | General Support |
| Marin Country Day School | Corte Madera, CA | $5,000 | 2025 | Annual Fund |
| LEAP Lagunitas School Savers | San Geronimo, CA | $5,000 | 2025 | General Support |
| San Geronimo Valley Community Cente | San Geronimo, CA | $4,000 | 2025 | Endowment Fund |
| Osher Marin Jewish Community Center | San Rafael, CA | $2,000 | 2025 | General Support |
| KQED | San Francisco, CA | $2,000 | 2025 | General Suppport |
| St Helena Endowment Trust | St Helena, CA | $1,550 | 2025 | General Support |
| St Helena Endowment Trust | St Helena, CA | $1,500 | 2025 | General Support |
| Dominican University of California | San Rafael, CA | $1,500 | 2025 | Athletics Program |
| Vivalon | San Rafael, CA | $1,070 | 2025 | General Support |
| Friends of the Library Fairfax | San Rafael, CA | $1,039 | 2025 | General Support |
| SFMarin Food Bank | San Francisco, CA | $1,000 | 2025 | General Support |
| Redwood Empire Food Bank | Santa Rosa, CA | $1,000 | 2025 | General Support |
| EarthJustice | San Francisco, CA | $1,000 | 2025 | General Support |
| Mountain Play Association | San Rafael, CA | $1,000 | 2025 | General Support |
| EarthJustice | San Francisco, CA | $1,000 | 2025 | General Support |
| West Marin Senior Services | Point Reyes Station, CA | $1,000 | 2025 | General Support |
| Mother Jones | San Francisco, CA | $500 | 2025 | General Support |
| Marin Symphony | San Rafael, CA | $500 | 2025 | General Support |
| San Geronimo Valley Community Cente | San Geronimo, CA | $500 | 2025 | Woodacre Park |
| National Parks Conservation Associa | Washington, DC | $500 | 2025 | General Support |
| Nicasio Volunteer Fire Dept | Nicasio, CA | $500 | 2025 | General Support |
| Pacific Forest Trust | San Francisco, CA | $500 | 2025 | General Support & Watershed Project |
| Ross Valley Players | Ross, CA | $500 | 2025 | General Support |
| Barrington Stage Company | Pittsfield, MA | $250 | 2025 | General Support |
| Shakespeare and Company | Tallahassee, FL | $250 | 2025 | General Support |
| Jacob's Pillow | Becket, MA | $250 | 2025 | General Support |
| Nicasio Historical Society | Nicasio, CA | $200 | 2025 | General Support |
| Nicasio Land Preserve | Nicasio, CA | $150 | 2025 | General Support |
| Maine Rockweed Coalition | Pembroke, ME | $100 | 2025 | Rockweed Forest Book |
| Berkshire Theatre Group | Pittsfield, MA | $100 | 2025 | General Support |
| Signal Foundation | Harrison, NY | $50 | 2025 | General Support |
| Signal Foundation | Harrison, NY | $50 | 2025 | General Support |
| Signal Foundation | Harrison, NY | $20 | 2025 | General Support |
| Vanguard Charitable Program | Warwick, RI | $60,000 | 2024 | Facilitation of grant making |
Vanguard Charitable Program
$2,631,590General Support
Vanguard Charitable Program
$50,000The Meili Fund
Vanguard Charitable Program
Facilitation of grant making
Kingswood-Oxford School
$10,000Annual Fund
Pomona College
$5,000Annual Fund
San Geronimo Valley Emergency Fund
$5,000General Support
LEAP Lagunitas School Savers
$5,000General Support
St Helena Endowment Trust
$1,550General Support
St Helena Endowment Trust
$1,500General Support
Friends of the Library Fairfax
$1,039General Support
Mountain Play Association
$1,000General Support
Nicasio Volunteer Fire Dept
$500General Support
Ross Valley Players
$500General Support
Shakespeare and Company
$250General Support
Jacob's Pillow
$250General Support
Nicasio Historical Society
$200General Support
Nicasio Land Preserve
$150General Support
Maine Rockweed Coalition
$100Rockweed Forest Book
Berkshire Theatre Group
$100General Support
Signal Foundation
$50General Support
Signal Foundation
$50General Support
Signal Foundation
$20General Support
Vanguard Charitable Program
$60,000Facilitation of grant making