Walk for PI
Your support of the Immune Deficiency Foundation (IDF) can ensure a healthier day, every day for every person with immune deficiency.
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Understanding primary immunodeficiency (PI)
Understanding PI
The more you understand about primary immunodeficiency (PI), the better you can live with the disease or support others in your life with PI. Learn more about PI, including the various diagnoses and treatment options.
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Living with PI
Living with PI
Living with primary immunodeficiency (PI) can be challenging, but you’re not alone—many people with PI lead full and active lives. With the right support and resources, you can, too.
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Get involved
Get involved
Be a hero for those with PI. Change lives by promoting primary immunodeficiency (PI) awareness and taking action in your community through advocacy, donating, volunteering, or fundraising.
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Advancing research and clinical care
Advancing research and clinical care
Whether you’re a clinician, researcher, or an individual with primary immunodeficiency (PI), IDF has resources to help you advance the field. Get details on surveys, grants, and clinical trials.
Get ready for 2025 Walk for PI!
Registration for 2025 is coming soon! If you have questions, please contact: walk@primaryimmune.org.
Join us in 2025!
The Immune Deficiency Foundation Walk for Primary Immunodeficiency (PI) is an opportunity for communities across the nation to gather and raise both funds and awareness for PI and the immunocompromised community. Fundraising can be done in teams or individually, and locations vary by year.
These fun, enlightening, family-friendly events are open to all. Funds from the Walk for PI are used to support research grants and Immune Deficiency Foundation programs that connect, engage, and empower those affected by primary immunodeficiency.
Walkers who raise at least $100 receive a commemorative t-shirt. Other incentives are available.
Walk for PI events in 2025
At each event, you can form a team, join a team, register as an individual walker, or make a contribution.
Milwaukee Walk for PI
Milwaukee Zoo
August 02, 2025
St. Louis Walk for PI
Six Flags St. Louis
August 16, 2025
Boston Walk for PI
Franklin Park Zoo
September 13, 2025
Philadelphia Walk for PI
Philadelphia Zoo
September 13, 2025
Seattle Walk for PI
Woodlands Zoo
October 18, 2025
Tampa Walk for PI
ZooTampa at Lowry Park
November 01, 2025
San Antonio Walk for PI
San Antonio Zoo
November 15, 2025
Walk for PI Coast to Coast
Coast to Coast Walk for PI (Virtual)
Zoom event at 12 PM ET
December 13, 2025
Questions? Reach out to walk@primaryimmune.org
National Sponsors
Thank you to the following national partners for the Walk for Primary Immunodeficiency
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