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Hit the streets in your boxers or briefs


The National Undy RunWalk is not just an opportunity to run or walk in your underwear. It is a family-friendly undy-themed RunWalk created by the Colorectal Cancer Alliance, with the goal to provide support for patients and families, caregivers, and survivors; to raise awareness of preventive measures; and inspire efforts to fund critical research.

Most Undy RunWalk events are a 5K, approximately 3.1 miles, and include a one mile fun run, which is untimed. People of all fitness levels attend and all events are timed unless otherwise noted. There are medals for the top three finishers in each age group and all fundraising participants receive a pair of our infamous undies to run or walk in.

Making an impact


Funds raised through the Undy RunWalk support national prevention, research, and patient support initiatives at the Colorectal Cancer Alliance. The Undy RunWalk also supports the Blue Hope Partnership Program by providing funding to local organizations that are making strides to end colorectal cancer in our lifetime.

Blue Hope Partnership Program

Funding for our Blue Hope Partners is made available through the Undy RunWalk. Check out our 2018 Blue Hope Partnership Guidelines to learn more about the program and how to apply.

Annual impact

1 million+

individuals supported

$3.9 million

invested locally

$2+ million

raised through the Undy

16,000

patients supported

11,000

financial assistance grants awarded to date

10,000

people united through National Dress in Blue Day

Ways to participate


Our volunteer program gives you the opportunity to use your voice and help us accomplish our mission of increasing colorectal cancer screening and survivorship. As a volunteer, you will serve as a liaison to the national office and lead the effort to end colorectal cancer in your community. We will provide you with the support and training you need to make a difference and educate the public.

Honor a loved one


The Undy RunWalk is a special way to honor a loved one living with colon cancer and to remember those we’ve lost. There’s a special place in our hearts for those supporting the Colorectal Cancer Alliance in memory of a loved one who passed away from colon cancer. To honor those who have lost their lives to this disease, we celebrate their life during the Opening Ceremony of each Undy RunWalk and throughout the event with keepsake memorial flags available onsite at the Colorectal Cancer Alliance tent.

I was excited to see Ed run his first 5K. We had 10 people there supporting Ed, including family and friends from four states. I wasn’t able to see Ed cross the finish line because I was a walker and crossed after him, but I was so proud of what he had accomplished and happy knowing that he could have been in a much worse place during the Undy. Being cancer free that day was the best thing.

Julie Sorensen

Wife of colon cancer survivor

Free patient & survivor registration

Since 2016, the Undy RunWalk team is honoring our colorectal cancer warriors by providing FREE registration to all patients and survivors.

Contact the Undy team at 202-204-7561 or email specialevents@ccalliance.org for the free code. In the meantime, find an Undy near you!

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