Letruska began her career in Mexico at the
Hipodromo de las Americas. She won both her starts at age two, a
maiden race on October 26, 2018, and an allowance race on November 9. In her next start on April 30, she set a brisk pace while being pressed by Blamed, who took over the lead as they turned into the stretch. Letruska held on for third, beaten by four lengths. On August 30, Letruska entered the
Shuvee Stakes over a distance of miles. She went to the early lead and set a brisk opening pace of :46.20 for the half-mile, then held off the closing drive of Royal Flag to win by a length. "She's a filly that needs speed and distance," said Gutierrez. "This is obvious in her races here and in Mexico. In Mexico, she doesn't have the big competition, but she made very good times. I think this is the kind of race she can run. I don't know how many fillies can go with her in :46." Letruska then traveled to
Belmont Park for the
Beldame Stakes on October 4. She broke poorly but then opened up a large lead on the far turn after running the opening half mile in :45.52. She tired turning into the stretch and finished a well-beaten fourth. "I had a big question mark about today, because after her last race in New York, I decided to remove the blinkers," said Gutierrez. "I came to the conclusion that all the time she runs she never saw the other horses. It's important how she responds when she feels the competition near her."
2021: five-year-old season Letruska began her five-year-old campaign by travelling to
Sam Houston Race Park for the
Houston Ladies Classic on January 31, 2021. Going off as the odds-on favorite, she went to the early lead and sent a moderate pace. She was challenged turning into the stretch and responded by drawing away to win by lengths. "I had never ridden her before, but watched her races," said jockey Jesus Castanon. "She was comfortable the entire race and wanted to keep going once we crossed the wire." On March 13, Letruska entered the
Azeri Stakes at Oaklawn Park where she went off as the slight favorite over
Shedaresthedevil, who had won the
Kentucky Oaks at age three. Letruska carried top weight of 124 pounds, while Shedaresthedevil carried 119 pounds in her first start of the year. Shedaresthedevil broke well and went to the early lead while setting moderate fractions. Letruska broke a bit slowly, then moved up to press the pace while being carried three wide around the turns. In the stretch, she gradually closed ground, but Shedaresthedevil held her off to win by a head. "It was a great race," said Gutierrez. "Small things can make a difference. But anyways, [Shedaresthedevil]'s the winner of the Kentucky Oaks. We [gave her] five pounds. It's a factor. But, congratulations to the winner. We'll try the next one." Letruska's next start was in the
Apple Blossom Handicap at Oaklawn Park on April 17. The purse for the race was increased to $1 million to attract the two top-rated female racehorses in the country, champions
Swiss Skydiver (
Preakness Stakes, Beholder Mile) and
Monomoy Girl (Breeders' Cup Distaff, Bayakoa Stakes). Letruska was the third betting choice and was assigned 118 pounds compared to 124 pounds for Monomoy Girl and 122 pounds for Swiss Skydiver. Swiss Skydiver broke in front, but Letruska then moved to the lead with Swiss Skydiver one length back on her inside and Monomoy Girl another half length back to her outside. Letruska set moderate fractions, running the first half mile in :47.96. Turning into the stretch, Swiss Skydiver started to drop back while Monomoy Girl moved closer to Letruska. The two mares dueled down the stretch, with Monomoy Girl getting her head in front with a furlong remaining. Letruska fought back and won by a nose in a photo finish. Letruska then shipped to New York for the
Ogden Phipps Stakes, part of the undercard for the
Belmont Stakes held on June 5. She became the post-time favorite after Swiss Skydiver was scratched due to a fever. She again faced Shedaresthedevil, this time at equal weights of 122 pounds. Letruska took the early lead with Shedaresthedevil half a length back on her outside. Letruska started to open her lead turning into the stretch and won by lengths. On June 26, Letruska continued her winning streak in the
Fleur de Lis Stakes at
Churchill Downs on June 26. She went straight to the lead and set moderate fractions before opening up in the stretch to win by lengths. After the win, Letruska moved to the head of the
NTRA Top Thoroughbred Poll that ranks North American racehorses in training. She was later passed by
Knicks Go after he won the Whitney Stakes in early August but remained the clear leader in the female division. Letruska was given a brief layoff, then returned in the
Personal Ensign Stakes at Saratoga on August 28 as the odds-on favorite in a field of nine. She ran a fast opening quarter mile in 23.01 seconds to get the early lead, pressed by Miss Marissa, Swiss Skydiver, and Harvey's Lil Goil. After the half in 46.74 and three-quarters in 1:10, her early rivals began to tire, eventually finishing well back. Letruska then held off the closing kicks of longshots Bonny South, Royal Flag, and Dunbar Road to win by half a length. Letruska extended her winning streak to five in the Spinster Stakes on October 10 at Keeneland. Going off as the 2-5 favorite, she led from the start and was never seriously threatened on her way to a length win. "She was just moving smooth out there," said Ortiz. "She didn't go that fast today but she did it easy, relaxed. Whenever I asked her she was there for me." Gutierrez advised that Letruska would make her next start in the
Breeders' Cup Distaff instead of facing male horses in the
Breeders' Cup Classic.
2022: six-year-old season Letruska made the first start of her six-year-old campaign on February 26, 2022, in the Royal Delta Stakes at Gulfstream. She took an early lead and was never challenged, winning by three lengths. "I put her on the lead, and she relaxed well," said Ortiz. "She was full of herself. On the straight you could see I was just easing her up. She was looking around at the people inside the track and the photographers and stuff. She did everything very easy." Gutierrez announced that he would be "more passive" with the mare in 2022, planning on a six-race campaign instead of the eight races she had run in 2021. On April 23, connections entered her in the Apple Blossom Handicap at Oaklawn. The small field also included
Ce Ce, who had won this event in 2020 and was named the 2021
American Champion Female Sprint Horse, and Grade I winner
Clairiere. Letruska broke out and was a bit rank but quickly straightened to show the way past the wire the first time. Racing around the first turn in the two path, she continued to set an uncontested pace down the backstretch and remained off the rail in the second turn. Shaken up when straightened for home, she drifted down the stretch but held late under continued steady handling to defeat Clairiere by lengths in a time of 1:42.22. On August 27 in the Grade I
Personal Ensign Stakes, Letruska was made the 12/5 second favorite in a field of five that included rivals Malathaat and Clairiere. Letruska again went to the lead, but with three-sixteenths of a mile to run she was headed and ended up third behind
Malathaat and Search Results. On October 9, Letruska finished fourth in Keeneland's
Spinster Stakes to
Malathaat, beaten by lengths. After the Spinster, it was announced that she would aim for the
Breeders' Cup Filly & Mare Sprint, but on October 31 she was taken out of Breeders' Cup consideration entirely. Gutierrez said that Letruska would need 60 days of rest, at which point a decision will be made on whether she will be retired. ==Retirement==