Texas · Nonprofit
THE MARATHON FOUNDATION
THE MARATHON FOUNDATION (Texas) receives grants from 4 organizations whose IRS filings report $98,097 to it, the largest being PERMIAN BASIN AREA FOUNDATION ($66,626). 3 of them have funded it in more than one year, and 88% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
Against its field
THE MARATHON FOUNDATION has grown faster than three-quarters of the 3,857 philanthropy nonprofits its size.
this organization peer median middle 50% of peers· 3,857 philanthropy nonprofits $100k–$1M, FY2025
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Yarborough Foundationshared funders
- Durotech Foundationportfolio match
- Wyatt Ranches Foundationportfolio match
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Who funds it, year by year
2018 → 2023: the base held at 2 funders, grant income rose $26k → $29k.
2 of 4 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 88% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of THE MARATHON FOUNDATION’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
THE MARATHON FOUNDATION leans on a few funders — its largest provides 68% of grant income and the top three 99%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
88% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund THE MARATHON FOUNDATION.
Largest funder’s share by year: 2018 59% · 2019 100% · 2020 100% · 2021 100% · 2022 73% · 2023 52% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
88% of THE MARATHON FOUNDATION's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $11k that is directly attributable, 100% of it comes from Texas funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $87k arriving through sponsors registered in 2 statesis excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first.
- Yarborough Foundationshared fundersTX · backs 51 organizations that share your funders
- Durotech Foundationportfolio matchits grantees resemble your mission
- Wyatt Ranches Foundationportfolio matchits grantees resemble your mission
- Texas Higher Education Foundationportfolio matchits grantees resemble your mission
- Helen Greathouse Charitable Trustshared fundersMO · backs 78 organizations that share your funders
- Texas Trust Givesportfolio matchits grantees resemble your mission
- Sidney and Charline Dauphin Foundationportfolio matchits grantees resemble your mission
- The Kaneka Foundationportfolio matchits grantees resemble your mission
- The Kleimann Family Foundationportfolio matchits grantees resemble your mission
- Ussga Memorial Fund Incportfolio matchits grantees resemble your mission
- Paul F & Virginia J Engler Fndnportfolio matchits grantees resemble your mission
- Frazier Family Foundation Incportfolio matchits grantees resemble your mission
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Organizations like THE MARATHON FOUNDATION
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Texas
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Screen this organization
A dated, signed PDF of the compliance screen for THE MARATHON FOUNDATION: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds THE MARATHON FOUNDATION?
- THE MARATHON FOUNDATION (Texas) receives grants from 4 organizations whose IRS filings report $98,097 to it, the largest being PERMIAN BASIN AREA FOUNDATION ($66,626). 3 of them have funded it in more than one year, and 88% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does THE MARATHON FOUNDATION have?
- IRS filings report 4 organizations giving $98,097 in grants to THE MARATHON FOUNDATION, 3 of which have funded it in more than one year.
- Who is the largest funder of THE MARATHON FOUNDATION?
- PERMIAN BASIN AREA FOUNDATION is the largest funder on record, with $66,626 in grants. The full list of funders is on this page.
- How can an organization like THE MARATHON FOUNDATION find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Texas. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), and the filings of 4funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported August 27, 2026. What this page cannot tell you · view filing