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Nonprofit · EIN 94-2902794

WESTERN STATES ENDURANCE RUN FOUNDATION

Tax-exempt · AUBURN, CA 95604

Financials

$1.2M$1.2M2022$1.1M$1.1M2023$1.3M$1.2M2024
Revenue Expenses · by fiscal year end
Financials of WESTERN STATES ENDURANCE RUN FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
September 30, 2025990$1,253,158$1,201,536$51,622$1,023,542$459,065$564,477
September 30, 2024990$1,058,241$1,061,643-$3,402$980,954$481,374$499,580
September 30, 2023990$1,217,009$1,157,014$59,995$507,398$31,872$475,526
Financial details: 990 for the year ended September 30, 2025

Revenue

Contributions, gifts and grants
$897,308
Program service revenue
$247,735
Investment income
$42,729
Net gain from sales of assets
$11,870
Net income from gaming
$65,386
Other revenue
$65,386

Expenses

Grants and similar amounts paid
$8,000
Compensation of officers, directors and key employees
$115,285
Salaries, compensation and benefits (total)
$123,796
Professional fundraising fees
$0
Occupancy
$31,115
Travel
$33,171
Program services (functional)
$1,159,706
Management and general (functional)
$37,672
Fundraising (functional)
$4,158

Balance sheet and other

Total assets, start of year
$980,954
Total assets, end of year
$1,023,542
Total liabilities, end of year
$459,065
Net assets, end of year
$564,477
Publicly traded securities
$457,811
Gross receipts
$1,253,158
Employees
1
Volunteers
1,600
Year formed
1983
State of legal domicile
CA

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended September 30, 2025, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
Craig ThornleyExecutive Director/Race Director
Officer
40$106,045$5,302
Christopher GaylordPresident
Trustee or director, Officer
10$0$0
Diana FitzpatrickVice President
Trustee or director, Officer
5$0$0
Lamont KingTreasurer
Trustee or director, Officer
10$0$0
Kara TeklinskiSecretary
Trustee or director, Officer
5$0$0
Charles SavageDirector
Trustee or director
5$0$0
Gary Towle MDDirector
Trustee or director
5$0$0
Mo LivermoreDirector
Trustee or director
1$0$0
Denis ZilaffDirector
Trustee or director
1$0$0
John TrentDirector
Trustee or director
1$0$0
Magdalena BouletDirector
Trustee or director
5$0$0
Tia BodingtonDirector
Trustee or director
1$0$0
Allyson ThomasDirector
Trustee or director
1$0$0
Dylan BowmanDirector
Trustee or director
1$0$0
Billy YangDirector
Trustee or director
1$0$0
990 for the year ended September 30, 2024: 17 people
NameTitleHours / weekCompensationOther / benefits
Craig ThornleyExecutive Director
Officer
40$102,250$5,792
Billy YangDirector
Trustee or director
1$6,681$0
Christopher GaylordPresident
Trustee or director, Officer
10$0$0
Diana FitzpatrickVice President
Trustee or director, Officer
10$0$0
Tim Twietmeyer Left 924Vice President
Trustee or director, Officer
5$0$0
Lamont KingTreasurer
Trustee or director, Officer
10$0$0
Karl Hoagland Left 1023Treasurer
Trustee or director, Officer
10$0$0
Kara TeklinskiSecretary
Trustee or director, Officer
5$0$0
Charles SavageDirector
Trustee or director
1$0$0
Gary Towle MDDirector
Trustee or director
5$0$0
Mo LivermoreDirector
Trustee or director
1$0$0
Denis ZilaffDirector
Trustee or director
1$0$0
John TrentDirector
Trustee or director
1$0$0
Magdalena BouletDirector
Trustee or director
1$0$0
Tia BodingtonDirector
Trustee or director
1$0$0
Allyson ThomasDirector
Trustee or director
1$0$0
Dylan BowmanDirector
Trustee or director
1$0$0
990 for the year ended September 30, 2023: 16 people
NameTitleHours / weekCompensationOther / benefits
Craig ThornleyExecutive Director
Officer
40$102,625$4,895
Billy YangDirector
Trustee or director
1$8,121$0
Diana FitzpatrickPresident
Trustee or director, Officer
10$0$0
Tim TwietmeyerVice President
Trustee or director, Officer
5$0$0
Christopher GaylordVice President
Trustee or director, Officer
10$0$0
Karl HoaglandTreasurer
Trustee or director, Officer
10$0$0
Kara TeklinskiSecretary
Trustee or director, Officer
5$0$0
Charles SavageDirector
Trustee or director
1$0$0
Gary Towle MDDirector
Trustee or director
5$0$0
Mo LivermoreDirector
Trustee or director
1$0$0
Denis ZilaffDirector
Trustee or director
1$0$0
John TrentDirector
Trustee or director
1$0$0
Magdalena BouletDirector
Trustee or director
1$0$0
Tia BodingtonDirector
Trustee or director
1$0$0
Allyson ThomasDirector
Trustee or director
1$0$0
Dylan BowmanDirector
Trustee or director
1$0$0

Address and contacts

Address (IRS master file)
PO BOX 99, AUBURN, CA 95604-0099
Principal officer (990 for 2024)
Christopher Gaylord, PO Box 99, Auburn, CA 95604
Signed the 990
Lamont King, Treasurer
Phone
(415) 578-8998
Return prepared by
Eide Bailly LLP

California records

California keeps its own records of charities and corporations. Search them by EIN 94-2902794 or by the name WESTERN STATES ENDURANCE RUN FOUNDATION.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

Mission

To be a leader in the sport of ultrarunning and promote its personal and community benefits through trail stewardship, research, and providing a life-changing experience.

990 for the year ended September 30, 2025

Program accomplishments

  • Successfully completed the 52nd annual Western States 100-Mile Endurance Run in June 2025. Increased worldwide engagement with over 31 hours of continuous livestream broadcast with over 1.2 million views globally. There were 285 finishers with a finish rate of 77% and improved tracking of runners with Starlink internet satellite connections to augment runner safety.
    Expenses $959,383 · grants $8,000 · revenue $247,735
  • Completed the third year of a multi-year project with US Forest Service to re-route and improve several miles of the Western States trail in the Granite Chief Wilderness Area, a federally designated Wilderness Area. The re-route project will continue through the summer of 2026. Successfully completed annual trail work on 100 miles of the Western States trail using our volunteer steward program, a partnership between Western States Endurance Run Foundation, US Forest Service, Auburn State Recreation Area and Western States Trail Foundation, modeled after the Pacific Crest Trail Association. This trail work included both financial commitment from WSER and from coordinated volunteer effort.
    Expenses $172,520
  • Sponsored two medical studies at the 2025 Western States 100-Mile Endurance Run entitled: "The interrelationship between nutritional strategies, body core temperature and gastrointestinal distress during the Western States Endurance Run" led by Lois Mougin of Loughborough University, UK and "Biomechanical workload, total energy expenditure and markers of bone health in ultrarunners competing in the 2025-2029 Western States Endurance Run" led by Richard Wily of the University of Montana and the Department of Defense.Both studies were successfully completed and researchers in the first study have recently published an article in the Journal of Applied Physiology entitled: (Continued on Schedule O)"Physiological, nutritional, and thermoregulatory responses of a world class mountain-ultramarathon athlete during the 2025 Western States Endurance Run 100."The WSER Foundation hosted a pre-race medical conference in Auburn on May 23, 2025 with 65 attendees to present the results of research conducted at the WSER. The Foundation's Medical Director presented pre-race zoom conferences to discuss medical issues of concern for WSER entrants.
    Expenses $27,803

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in September, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025September 30, 2026February 16, 2027Not due yet
2024September 30, 2025February 17, 2026990 on file
2023September 30, 2024February 18, 2025990 on file

IRS record

EIN
94-2902794
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1994
Accounting year ends
September
Files
Form 990 or 990-EZ
Assets (IRS master file)
$1,023,542
Income (IRS master file)
$1,253,158

Filing history

FormYear endedRevenueExpensesAssetsReturn
990September 2025$1,253,158$1,201,536$1,023,542XML
990September 2024$1,058,241$1,061,643$980,954XML
990September 2023$1,217,009$1,157,014$507,398XML
990September 2022$803,549$747,705$414,989IRS
990September 2021–––IRS
990September 2020–––IRS
990September 2019–––IRS
990September 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 94-2902794).

Questions about WESTERN STATES ENDURANCE RUN FOUNDATION

What is the EIN of WESTERN STATES ENDURANCE RUN FOUNDATION?
The employer identification number (EIN) of WESTERN STATES ENDURANCE RUN FOUNDATION is 94-2902794.
Is WESTERN STATES ENDURANCE RUN FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1994.
Are donations to WESTERN STATES ENDURANCE RUN FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does WESTERN STATES ENDURANCE RUN FOUNDATION file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of WESTERN STATES ENDURANCE RUN FOUNDATION due?
The return for tax year 2025 (the year ending September 30, 2026) is due February 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did WESTERN STATES ENDURANCE RUN FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended September 2025.
Who is the principal officer of WESTERN STATES ENDURANCE RUN FOUNDATION?
The 990 for the year ended September 30, 2025 names Christopher Gaylord.
Who are the officers and directors of WESTERN STATES ENDURANCE RUN FOUNDATION?
The 990 for the year ended September 30, 2025 lists 15 people; 1 received compensation from the organization, the highest $106,045 (Craig Thornley, Executive Director/Race Director).
How much revenue does WESTERN STATES ENDURANCE RUN FOUNDATION have?
On its 990 for the year ended September 30, 2025 it reported revenue of $1,253,158, expenses of $1,201,536 and total assets of $1,023,542 at year end.

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