Fiesta de Mayo 5k - Battling Cancer Together

Celebrate the Season at the 4th Annual Fiesta de Mayo 5K!
Run for a Cure. Stay for the Fiesta.

Join Battling Together for our 4th Annual Fiesta de Mayo 5K walk/run as we return to beautiful Webster Groves to raise vital funds in the fight against blood cancers. All proceeds benefit Blood Cancer United, in their mission to find a cure for Leukemia, Lymphoma, and all forms of blood cancer. We appreciate you helping us raise vital funds for this important cause.

The Experience Enjoy a scenic, professionally timed course that winds through the stately streets of Webster Groves, followed by the ultimate post-race celebration. Whether you’re cooling down with a refreshing Kona Ice snow cone or celebrating your finish with a signature margarita, we have the perfect reward waiting for you at the finish line!

To our returning runners—thank you for your continued support. To those joining us for the first time—we can’t wait to show you what makes Fiesta de Mayo such a special event.

Get ready for an epic morning! Your registration includes:

• Custom Fiesta de Mayo Tee – A unique, high-quality design perfect for race day and beyond.
• Youth Finisher Medals – Commemorative medals to celebrate the hard work of our runners aged 16 and under.
• Professional Chip Timing – Accurate, real-time results provided by the experts at Big River Race Management.
• Signature Margarita – A refreshing post-race celebration to honor your finish and toast to a world without cancer (ages 21+).
• Kona Ice Snow Cones – The Kona truck will be on-site providing refreshing treats for everyone to enjoy!

🏁 Don’t miss out! Register by April 12 to guarantee your official Fiesta de Mayo race shirt.

*** Blood Cancer United is formerly known as the Leukemia & Lymphoma Society.

We would like to thank all the hard work Gary and Linda Chatham have done towards raising awareness and funds for Leukemia and Lymphoma. The two of them started and managed Race to Cure Lymphoma for over 20 years. The Race to Cure Lymphoma carried two races, the Cinco K Mayo and The Flat as a Pancake.  

Our family has raced and volunteered in their races. And now we are grateful for the opportunity to continue their legacy, and keeping these races going. We share a similar cause towards raising money for a cure of Leukemia and Lymphoma.  We appreciate you helping us raise money for this important cause. Webster Groves will continue to be the location of the race, but under the new name Fiesta de Mayo.

If you have participated in any of the previous Race to Cure Lymphoma events, thanks for coming back! 

Want to be a part of the Fiesta de Mayo Walk/Run...but not really want to run? We need help in course monitoring and Setup and Checkin and Clean Up! For Volunteer options, please check out the Volunteer tab at the top of the page or click the Volunteer link.

Course Directions

Starts & Ends - Downtown Webster Groves, West Lockwood 

Start: West Lockwood Avenue (Downtown), Sherwood Drive, Baker Ave (Wedge), Locksley Pl, West Frisco Ave, Sherwood Drive, West Sheffield Avenue, North Crofton Avenue, West Lockwood Avenue (Downtown): Finish

The Course Map is provided below or by clicking here. 

We would love your follow on Facebook or Instagram. In addition, once you register for the race, we would greatly appreciate if you'd share with your friends.  

Please follow our pages and invite your friends on Facebook or Instagram.

The top overall Male and Female winners will receive an award!

Our mission to cure blood cancer started with a single family’s story, and it continues today through the incredible generosity of our sponsors. We invite you to be a vital part of our Annual Fiesta de Mayo 5K.

Your sponsorship helps us fund critical research and offer a helping hand to families in their time of need. All proceeds from the event benefit Blood Cancer United, helping fund research and programs dedicated to finding a cure and providing critical support to patients and families.

We offer a variety of sponsorship levels designed to provide your business with meaningful visibility within the St. Louis community and beyond.

Interested in becoming a sponsor? We would love to hear from you. Please contact us at BattlingTogether@gmail.com or visit our Race Contact Info page to get started. Thank you for your invaluable support!

We would love your follow on Facebook or Instagram. In addition, once you register for the race, we would greatly appreciate if you'd share with your friends.  

Please follow our pages and invite your friends on Facebook or Instagram.