Purpose in Paint: Rahal’s No. 15 Honda Returns to Long Beach in One Cure Colors

Rahal Letterman Lanigan Racing brings back its One Cure livery on Graham Rahal’s No. 15 Honda for the Acura Grand Prix of Long Beach, carrying a message beyond racing.

LONG BEACH, Calif. — The streets of Long Beach will once again carry a message beyond racing this April, as Rahal Letterman Lanigan Racing rolls out a special One Cure livery on Graham Rahal’s No. 15 Honda for the Acura Grand Prix of Long Beach IndyCar event.

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A Meaningful Return

The striking one-off scheme returns to the RLL program in partnership with Colorado State University’s Flint Animal Cancer Center initiative, designed to spotlight cancer research benefiting both humans and animals through clinical trials and translational medicine.

For Graham Rahal, the design is more than just another temporary paint scheme — it represents a long-running relationship between the Rahal family and One Cure, a program that has previously appeared on the No. 15 entry in multiple seasons across different IndyCar events.

The One Cure colors, featuring clean CSU-inspired tones and bold branding, stand out in a field often defined by aggressive sponsor rotations at street circuits like Long Beach. For Rahal and RLL, the livery serves as a continuation of a broader awareness campaign that uses IndyCar’s global platform to promote medical research and philanthropic engagement.

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A Long Beach Tradition

Long Beach has historically been a stage where RLL introduces alternate liveries for the No. 15 entry, and the return of One Cure adds a deeper narrative layer to that tradition — blending competitive racing with charitable purpose.

Rahal Letterman Lanigan Racing has become known for rotating high-visibility, sponsor-driven designs across its IndyCar lineup, particularly on the No. 15 Honda. From tribute schemes to tech partnerships and nonprofit campaigns, the car has often acted as a visual ambassador for the team’s off-track relationships.

The One Cure scheme fits that pattern but stands out for its emotional resonance. Unlike typical commercial branding, it connects directly to research initiatives aimed at improving cancer treatment outcomes for both pets and people.

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Racing With Purpose

As the green flag drops on the Long Beach weekend, Rahal will carry more than just championship ambitions into one of IndyCar’s most iconic street races. The One Cure livery transforms the No. 15 into a rolling awareness campaign, turning every lap of the concrete canyon into a visible statement for cancer research advocacy.

In a sport where sponsorship often changes race to race, the One Cure partnership remains one of Rahal’s most purpose-driven collaborations — returning once again to a circuit that rewards both precision on track and presence off it.

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Photography by James Hedley — Speed and Spirit Media. All images shot trackside at the Acura Grand Prix of Long Beach, April 2026.