When people say the Marine Corps Marathon 'doesn't use a simple lottery,' the charity bib program is a big part of what they mean. Alongside MCM's general entry pool, dozens of MCM-affiliated charities hold their own blocks of guaranteed race entries — a path that trades the uncertainty of the general pool for a fundraising commitment to a cause. It's one of the most reliable ways to guarantee a spot in one of the country's largest marathons, and it's worth understanding on its own terms rather than as a fallback.

How charity entry works

MCM Charity Partners are organizations that have partnered directly with the Marine Corps Marathon Organization and hold guaranteed entries to the race. Instead of applying through general registration, you register through the charity itself, commit to raising funds on its behalf, and receive your bib as part of that arrangement rather than through the main entry pool. It removes the uncertainty of general registration entirely — if you secure a spot with a charity partner and meet your commitment, you're running.

Real MCM charity partners

MCM's charity program has included dozens of organizations across military, health, and community causes. Examples of past and current partners include Semper Fi & America's Fund and Semper K-9, both focused on veteran and service-member support; the Mighty Oaks Foundation, a veteran-focused nonprofit; the Foundation for Women Warriors; the Melanoma Research Alliance and the Sarcoma Foundation of America, both health-research causes; and Stephen Siller Tunnel to Towers and World Central Kitchen, both larger national nonprofits. The full, current list changes year to year and is published on MCM's own charity program page — a good place to look for a cause that resonates with you personally, since MCM has consistently offered a genuinely wide range of options.

What you're committing to

A charity bib isn't free money for MCM or the charity — it comes with a fundraising minimum, set individually by each partner organization rather than by MCM itself. Some charities also require you to cover any shortfall personally if you don't hit your fundraising target by the deadline, so it's worth reading the actual agreement from your chosen charity, not just the pitch, before you commit. Fundraising minimums, deadlines, and what happens if you fall short all vary significantly by organization — contact the charity directly for its current terms rather than assuming they match another partner's.

Charity bib vs. general registration

• Certainty. A charity bib is a guaranteed entry once you're accepted by the organization; general registration may or may not guarantee a spot depending on the year's format and demand.
• Cost structure. General registration is a flat entry fee; a charity bib adds a fundraising commitment on top of (or sometimes instead of) the standard fee, with the amount set by the charity.
• Timing. Charity registration windows often stay open longer than general registration, since charities can continue offering their guaranteed entries after the main pool is decided.
• Purpose. Beyond the guaranteed entry, charity runners get to dedicate their race to a specific cause — a meaningful difference for a lot of MCM's runners, independent of the logistics.

Choosing a charity that's right for you

Start with a cause you'd support even if it weren't attached to a race entry — fundraising is much easier, and more enjoyable, for something you actually care about. From there, ask the organization directly about its fundraising minimum, deadline, training support, and what happens if you fall short, since these details live with each charity rather than on a single standardized MCM page. If you want the entry certainty without a strong personal connection to a cause, look for a partner offering a lower fundraising minimum or a training program you're interested in anyway.

The charity bib program is one of the clearest examples of how MCM's entry process differs from other major marathons — it's not a backup plan so much as a parallel front door, and for a lot of runners, it's the one they end up using on purpose.