2017: two-year-old season

Bolt d'Oro joined Mick Ruis's stable in the spring of 2017 and posted his first workout on May 11.^[2] He caught the attention of handicappers with an excellent workout on July 22 of 59 seconds flat for 5 furlongs – the best time of 93 such workouts on the day. As a result, he was the odds-on favorite for his first start in a maiden special weight race at Del Mar on August 5. He broke poorly but quickly made his way through the field and dueled for the early lead. In the stretch, he responded to a challenge from Bank Walker to draw off for a 2+1⁄4-length win.^[4]

Ruis then decided to step Bolt d'Oro up in class for the Grade I Del Mar Futurity on September 4. He again broke poorly, settling near the back of the field behind a fast early pace. The colt started to make up ground while racing wide around the turn, then dueled with Zatter down the stretch. He drew clear near the wire to win by three-quarters of a length with the favorite, Run Away, well back in third.^[5][6]

On September 30, Bolt d'Oro entered the FrontRunner Stakes at Santa Anita Park as the odds-on favorite in a field of nine. He broke well and stalked the early pace set by Take the One O One. He took the lead turning into the stretch and continued to draw away, ultimately winning by 7+3⁄4 lengths over Solomini.^[7]

Bolt d'Oro made his final start of the year in the Breeders' Cup Juvenile at Del Mar on November 4. Once again the odds-on favorite, he stumbled at the start and fell well behind the early leaders, then had to check his stride in heavy traffic. Around the final turn, he swung extremely wide to find racing room and started to make up ground rapidly. However, he could not close down the early advantage of Good Magic, who won by 4+1⁄2 lengths, and Solomini, who finished a length ahead of Bolt d'Oro in second.^[8]

In the Eclipse Award voting for American Champion Two-Year-Old Male Horse, Bolt d'Oro finished second to Good Magic by just 18 votes.^[9] The two horses were given an equal rating of 126 pounds in The Jockey Club's juvenile rankings, formerly known as the Experimental Free Handicap.^[10]

2018: three-year-old season

Bolt d'Oro's three-year-old debut was delayed by some body soreness in early January.^[11] Ruis bypassed the early prep races in February to give the colt more time to recover. Ruis also decided to change jockeys from Corey Nakatani, who had ridden the colt in all of his two-year-old races, to Javier Castellano.^[12]

On March 10, Bolt d'Oro entered the San Felipe Stakes, in which he was the slight favorite over the undefeated McKinzie. Lombo went to the early lead, followed closely by McKinzie with Bolt d'Oro a few lengths back in fourth. On the final turn, Bolt d'Oro made his move on the outside while Lombo dropped back. Rounding into the stretch, Bolt d'Oro bumped with McKinzie, then pulled into the lead. After nearly going into the rail, McKinzie rallied and the two horses battled down the stretch. In the final sixteenth of a mile, McKinzie started to bear out into Bolt d'Oro's path and the two horses bumped again. McKinzie crossed the line a head in front, but was disqualified to second. The stewards felt that the fault for the first contact near the head of the stretch was inconclusive: one camera angle showed that McKinzie may have caused the problem by bearing out, while the other angle showed that Bolt d'Oro may have been at fault for bearing in. However, McKinzie was clearly at fault in the second incident and the stewards felt the interference was enough to have cost Bolt d'Oro the race.^[13]

The win moved Bolt d'Oro to the top of the NTRA three-year-old poll with 29 first place votes, followed closely by McKinzie.^[14] Veteran sportswriter Steve Haskin called them "two exceptional colts who ran their hearts out, got a lot out of the race, and are for now clear-cut favorites for the Run for the Roses."

The Santa Anita Derby, held on April 7, attracted a field of seven. Trainer Bob Baffert was originally planning to enter McKinzie for a rematch against Bolt d'Oro, but withdrew the colt due to a minor injury.^[15] Instead Baffert entered Justify, who had run impressively in his first two starts but was facing stakes company for the first time. Justify went to the early lead and set easy fractions, opening up three lengths on Bolt d'Oro down the backstretch in what was essentially a match race. Bolt d'Oro was put to a drive as they rounded the final turn and closed to within a length and a half before Justify again drew away for a three-length win.^[16]

On May 5, Bolt d'Oro entered the 2018 Kentucky Derby as one of the favorites. He raced a few lengths behind a fast early pace set by Promises Fulfilled and Justified then tried to close ground while going wide around the far turn. Justify repelled the challenge and went on to win the race, while Bolt d'Oro faded to finish twelfth.^[17]

Rather than facing Justify again, Ruis opted to enter Bolt d'Oro in the prestigious Metropolitan Handicap (popularly known as the Met Mile) against older horses. Bolt d'Oro challenged Bee Jersey for the early lead but was unable to maintain the pace and tailed off to finish last.^[18]

Bolt d'Oro was subsequently transferred to the stable of Steve Asmussen, who gave the colt some time off after the spring campaign. Bolt d'Oro was expected to return to racing in the late fall but returned sore from an October workout and was subsequently retired. "He went to the top races, and we had to go against big barns that had 30-40 precocious horses," Ruis said. "He danced with all of them. He was an incredible horse."^[19]

Notable progeny

c = colt, f = filly, g = gelding