The Acura Grand Prix of Long Beach once again made history on Thursday when it was announced the event had been bought by Penske Entertainment.

It’s a major milestone in the Grand Prix’s storied history, which will be on full display at this year’s three-day racing spectacular — the event’s 50th anniversary.

But it’s far from the first time the Grand Prix and its organizers have achieved such a significant milestone, and surely won’t be the last.

Here’s a look at some of the Grand Prix of Long Beach’s biggest moments.

1975

Long Beach forever changed one September morning in 1975, when the first-ever Grand Prix — organized by founder Chris Pook — overtook the city’s streets and set off a chain of events that would cement the town as a hub for international motorsports.

British driver Brian Redman claimed victory during the first Grand Prix of Long Beach, beating the likes of Tony Brise, Al Unser and even Mario Andretti.

1977

Though the first two years of the Grand Prix had been met with great success, the result of the 1977 iteration was etched in the history books, putting Long Beach on the map along with it. This was the year of Mario Andretti’s historic — and dramatic — Grand Prix of Long Beach win, when he overtook a faltering Jody Scheckter three laps from the finish to become the first American driver to ever win a Formula One event on U.S. soil.

1980

Toyota becomes the Grand Prix’s marquee sponsor — a title the event would hold on to for the next 39 years.

1983

Championship Auto Racing Teams signs an agreement to make its debut at the next year’s Grand Prix of Long Beach.

1984

CART makes its Long Beach debut, and Andretti takes another Grand Prix victory.

1988

Al Unser Jr. — hailing from the famous Unser racing family out of New Mexico — secures his first Grand Prix of Long Beach win, putting an end to Andretti’s reign and starting his journey to becoming “King of the Beach.”

Unser Jr. won the Grand Prix six times in total, including four back-to-back victories from 1988 to 1991.

2005

Kevin Kalkhoven and Gerald Forsythe purchase the Grand Prix Association of Long Beach — the event’s organizing body.

2008

The GPALB enters a long-term agreement to run the NTT IndyCar Series, which officially kicked off in 2009.

That year, the Grand Prix also staged Champ Car’s final race, which Australian Will Power won.

2010

Ryan Hunter-Reay wins the Grand Prix of Long Beach, becoming the first American to achieve the feat since Andretti in 2002.

2013

Takuma Sato claims victory — the first Japanese driver to win the Grand Prix of Long Beach.

2015

Scott Dixon wins his first Grand Prix of Long Beach — after nine tries.

“That began a streak of four consecutive first-time winners,” according to the AGPLB, “which included France’s Simon Pagenaud (2016), Canada’s James Hinchcliffe (2017) and America’s Alexander Rossi (2018).”

2019

The Grand Prix gets a new title sponsor — Acura. The event is rebranded as the Acura Grand Prix of Long Beach.

2020

The Grand Prix is canceled because of the COVID-19 pandemic and delayed until the following year.

2021

For the first time since 1975, the Grand Prix of Long Beach kicks off in September — instead of April — after being delayed by the pandemic. Valencia’s Colton Herta takes his first win in Long Beach.

2022

The Grand Prix moves back to its traditional April time. Kalkhoven, part-owner of the Grand Prix Association, dies — raising questions about what would happen with his stake in the event.

2024

The association hosts the 49th annual Grand Prix of Long Beach, which draws in more than 194,000 people to downtown — toppling attendance records for the second year in a row.

Anticipation for the event’s 50th anniversary, which will get underway April 11-13, grows as the Grand Prix Association announces plans for the upcoming event.

The association is acquired by Penske Entertainment.