[12] Forever Young began his racing career in a contest for previously unraced juveniles over 1,800 metres on good ground at Kyoto Racecourse on October 14, 2023.

[14][15] On December 13 at Kawasaki Racecourse, Forever Young stepped up to Domestic Group 1 class to contest Zen-Nippon Nisai Yushun over 1,600 metres.

In the race, he had a rough start and had to make up for the four-to-five-length difference from the leading horse, Book'em Danno, in the middle of the final straight.

By February, he ranked second on Japan Road to the Kentucky Derby,[21][22][23] trailing behind Ramjet [ja], the winner of the Hyacinth Stakes.

[24] On March 30, Forever Young ran in the 1,900-meter Group II UAE Derby held at Meydan Racecourse dirt in Dubai, with jockey Ryusei Sakai.

South American Auto Bahn went to the front but could not withstand Forever Young, who came up strongly to win by two lengths in a time of 1:57.89.

Forever Young collected 100 qualification points in the Road to the Kentucky Derby and entered the event undefeated.

[25] In the early morning hours of April 13, Forever Young arrived at Churchill Downs, having been conditioned by Yahagi.