Fiesta de Mayo 5k - Battling Cancer Together

Sun, May 3, 2026, 8:30 AM CDT

Location: Saint Louis, MO; Webster Groves - Upper Municipal Parking Lot, 20 Allen Avenue , MO 63119, 63119
Type: RUN

Official registration Past results (if available)

Profile in progress

More event insights are on the way. Additional race details are being prepared—check back soon, and always confirm timing and logistics on the official registration page.

At a glance

Who it's for

For a Cause

Perks & features

After-Party
Medal
Shirt
Swag Included

From the public listing — confirm on the official site.

Auto-drafted from the public listing — confirm details on the official event page before signing up.

Distances & registration

2 options

Registration for all distances is through the official signup link above.

5K
Sun, May 3, 8:30 AM CDT · From $33.63
Opens Oct 10, 2025, 5:00 PM CDT · Closes Apr 12, 2026, 7:59 PM CDT
5K
Sun, May 3, 8:30 AM CDT · From $28.29
Opens Oct 10, 2025, 5:00 PM CDT · Closes Apr 12, 2026, 7:59 PM CDT

The course

Vibe Check

Easygoing

5K distance, rolling area, typically mild weather

Rolling area

Based on typical seasonal and area patterns — not a course map or official forecast.

From the organizer

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.

Also in this area

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More demanding options nearby

Higher-difficulty races in the same state.