The Indianapolis Motor Speedway and Firestone will honor four-time Indianapolis 500 winner Al Unser on the 45th anniversary of his first win at the Speedway on May 23. Legends Day Honoring Al Unser presented by Firestone will be held in conjunction with multiple other activities the day before the 99th Indy 500.

"Fifty years ago I arrived at the Indianapolis Motor Speedway as a rookie, drove for some remarkable teams, raced with my son and brother, drank the milk and my life was forever changed by this special place," said Unser. "I am honored to be named the 2015 Legend and look forward to seeing the race fans and being a part of the events leading up to the spectacular annual Indy 500 Race."

Unser, a member of one of racing's most exclusive clubs as a four-time Indianapolis 500 winner in 1970, 1971, 1978 and 1987, will receive special recognition from Firestone during the Public Driver's Meeting and will participate in a question and answer session, which includes time for autographs, with fans later that day on the IMS Pagoda Plaza Stage.

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Unser holds the record for most laps led (644) in 27 career Indianapolis 500 starts. The 17-year span between his first and last Indianapolis 500 victory is also an event record. He is one of five drivers to win two consecutive Indianapolis 500-Mile Races and is the oldest driver to win the "500" at 47 years, 360 days old in 1987.

Unser's 39 victories in Indy car competition rank fourth all time. Unser's 10 wins during his 1972 USAC championship season are tied with A.J. Foyt (1964) for the most wins during a single Indy car season.