There is recognition for the United States Champion Thoroughbred Trainer by wins but no formal award is given to the trainer in Thoroughbred flat racing whose horses won the most races in North American Thoroughbred racing.
Dale Baird holds the record for the most national titles with fifteen. Second is Hirsch Jacobs who won more races during a year than any other American trainer on eleven occasions. Tied for third all-time are Jack Van Berg and Steve Asmussen with nine. H. Guy Bedwell, trainer of Triple Crown winner Sir Barton, was a seven-time champion.
| Year | Trainer | Wins |
| 2023 | Steven M. Asmussen | 379 |
| 2022 | Steven M. Asmussen | 382 |
| 2021 | Steven M. Asmussen | 455 |
| 2020 | Steven M. Asmussen | 420 |
| 2019 | Karl Broberg | 548 |
| 2018 | Karl Broberg | 509 |
| 2017 | Karl Broberg | 412 |
| 2016 | Karl Broberg [3] | 367 |
| 2015 | Karl Broberg | 420 |
| 2014 | Karl Broberg | 325 |
| 2013 | Steven Asmussen[4] | 307 |
| 2012 | Jamie J. Ness | 395 |
| 2011 | Steven Asmussen | 348 |
| 2010 | Steven Asmussen | 506 |
| 2009 | Steven Asmussen | 650 |
| 2008 | Steven Asmussen | 621 |
| 2007 | Steven Asmussen | 488 |
| 2006 | Scott A. Lake[5] | 528 |
| 2005 | Steven Asmussen | 473 |
| 2004 | Steven Asmussen | 555 |
| 2003 | Scott A. Lake | 455 |
| 2002 | Steven Asmussen | 407 |
| 2001 | Scott A. Lake | 407 |
| 2000 | Scott A. Lake | 337 |
| 1999 | Dale Baird[6] | 304 |
| 1998 | Dale Baird | 290 |
| 1997 | Dale Baird | 300 |
| 1996 | Dale Baird | 330 |
| 1995 | Dale Baird | 286 |
| 1994 | Mario Beneito | 247 |
| 1993 | Dale Baird | 269 |
| 1992 | Dale Baird | 256 |
| 1991 | Dale Baird | 296 |
| 1990 | D. Wayne Lukas | 267 |
| 1989 | D. Wayne Lukas | 305 |
| 1988 | D. Wayne Lukas | 318 |
| 1987 | D. Wayne Lukas | 343 |
| 1986 | Jack Van Berg[7] | 266 |
| 1985 | Dale Baird | 249 |
| 1984 | Jack Van Berg | 250 |
| 1983 | Jack Van Berg | 258 |
| 1982 | Dale Baird | 276 |
| 1981 | Dale Baird | 349 |
| 1980 | Dale Baird | 306 |
| 1979 | Dale Baird | 316 |
| 1978 | King T. Leatherbury | 304 |
| 1977 | King T. Leatherbury | 322 |
| 1976 | Jack Van Berg | 496 |
| 1975 | Richard E. Dutrow Sr. | 352 |
| 1974 | Jack Van Berg | 329 |
| 1973 | Dale Baird | 305 |
| 1972 | Jack Van Berg | 286 |
| 1971 | Dale Baird | 245 |
| 1970 | Jack Van Berg | 282 |
| 1969 | Jack Van Berg | 239 |
| 1968 | Jack Van Berg | 256 |
| 1967 | Everett Hammond | 200 |
| 1966 | Lou Cavalaris Jr. | 175 |
| 1965 | Howard Jacobson | 200 |
| 1964 | Howard Jacobson | 169 |
| 1963 | Howard Jacobson | 140 |
| 1962 | W. Hal Bishop | 162 |
| 1961 | Vester R. Wright | 178 |
| 1960 | Frank H. Merrill Jr. | 143 |
| 1959 | Vester R. Wright | 172 |
| 1958 | Frank H. Merrill Jr. | 171 |
| 1957 | Vester R. Wright | 192 |
| 1956 | Vester R. Wright | 177 |
| 1955 | Frank H. Merrill Jr. | 154 |
| 1954 | Robert H. McDaniel[8] | 206 |
| 1953 | Robert H. McDaniel | 211 |
| 1952 | Robert H. McDaniel | 168 |
| 1951 | Robert H. McDaniel | 164 |
| 1950 | Robert H. McDaniel | 156 |
| 1949 | William Molter & W. Hal Bishop (Tie) [9] | 129 |
| 1948 | William Molter | 184 |
| 1947 | William Molter | 155 |
| 1946 | William Molter | 122 |
| 1945 | Stanley Lipiec | 127 |
| 1944 | Hirsch Jacobs[10] | 117 |
| 1943 | Hirsch Jacobs | 128 |
| 1942 | Hirsch Jacobs | 133 |
| 1941 | Hirsch Jacobs | 123 |
| 1940 | David Womeldorff | 108 |
| 1939 | Hirsch Jacobs | 106 |
| 1938 | Hirsch Jacobs | 109 |
| 1937 | Hirsch Jacobs | 134 |
| 1936 | Hirsch Jacobs | 177 |
| 1935 | Hirsch Jacobs | 114 |
| 1934 | Hirsch Jacobs | 127 |
| 1933 | Hirsch Jacobs | 116 |
| 1932 | George Alexandra | 76 |
| 1931 | John D. Mikel | 72 |
| 1930 | Charles Burton Irwin[11] | 92 |
| 1929 | Loyd Gentry Sr. | 74 |
| 1928 | John F. Schorr & John Reed (Tie) | 65 |
| 1927 | Sam Hildreth | 72 |
| 1926 | William Perkins | 82 |
| 1925 | John J. Duggan | 70 |
| 1924 | James A. Parsons | 93 |
| 1923 | Charles Burton Irwin | 147 |
| 1922 | Henry E. McDaniel & James A. Parsons (tie) | 78 |
| 1921 | Sam Hildreth | 85 |
| 1920 | Kay Spence & S. Abner Clopton (tie) | 74 |
| 1919 | Kay Spence | 96 |
| 1918 | Kay Spence | 58 |
| 1917 | H. Guy Bedwell[12] | 66 |
| 1916 | H. Guy Bedwell | 123 |
| 1915 | H. Guy Bedwell | 97 |
| 1914 | H. Guy Bedwell | 84 |
| 1913 | H. Guy Bedwell | 87 |
| 1912 | H. Guy Bedwell | 84 |
| 1911 | W. B. Carson | 72 |
| 1910 | Frank Ernest | 105 |
| 1909 | H. Guy Bedwell | 122 |
| 1908 | A. Jack Joyner[13] | 71 |
| 1907 | James G. Rowe Sr., James Blute, Frank Hanlon (tie)[14] | 70 |
- ^ KentuckyDerby.com (Churchill Downs Incorporated) Retrieved June 28, 2017
- ^ "Leaders By Year (2000-2018) - North American Thoroughbred Racing Starters - Trainer". Equibase Co. LLC. 2019-01-17. Retrieved 2019-01-18.
- ^ Karl Broberg 367 wins BloodHorse.com, January 5, 2017 Retrieved July 16, 2017
- ^ Steven Asmussen training records at Keeneland.com Retrieved July 12, 2017
- ^ Scott Lake training championships at Pimlico.com Retrieved July 16, 2017
- ^ Dale Baird profile at the Los Angeles Times, December 25, 2007 Retrieved July 12, 2017
- ^ Jack Van Berg bio at America's Best Racing Retrieved July 12, 2017
- ^ Robert H. McDaniel bio at the Washington Racing Hall of Fame Retrieved July 19, 2017
- ^ William Molter's 4 national titles at the Washington Racing Hall of Fame Retrieved July 19, 2017
- ^ Hirsch Jacobs bio and the Jewish Virtual Library Retrieved July 19, 2017
- ^ Washington Racing Hall of Fame Retrieved July 20, 2017
- ^ H. Guy Bedwell at the National Museum of Racing and Hall of Fame Retrieved July 20, 2017
- ^ Champion trainers 1908-1921, DRF at the University of Kentucky Archives including A. Jack Joyner Retrieved July 16, 2017
- ^ "Notes of the Turf". Daily Racing Form at University of Kentucky Archives. 1914-10-01. Retrieved 2019-05-10.