Fitzgerald began his karting career in 2019 in his native Ireland, before moving into British competitions. In his final year of karting, 2021, he competed in the British Kart Championships in the Senior X30 category.
Formula 4
British F4
In 2022, Fitzgerald made his car racing debut in the F4 British Championship with Phinsys by Argenti.[1] With eight podiums in the rookie class, he finished fourth in the rookie class and 14th in the overall standings.
Italian F4
Fitzgerald joined the grid of the Italian F4 Championship at the Vallelunga round during the same year, driving for R-ace GP.[2][3] He raced again in the following round at the Red Bull Ring, scoring points in Race 1 with an eighth-placed finish, which elevated him to 22nd in the overall standings.
Formula Regional
Formula Regional Oceania Championship
On 11 January 2023, it was announced that Fitzgerald would compete for Giles Motorsport in the final three rounds of the 2023 Formula Regional Oceania Championship.[4] With a best finish of 4th place, he finished 17th in the standings.
During the first race of the season at the first round at the Imola Circuit, Fitzgerald broke three vertebrae and was hospitalised after a collision with sausage kerbs on the track, a similar incident to that of Abbie Eaton during the 2021 Austin W Series round.[9]RPM owner Keith Donegan expressed his anger for the continued inclusion of sausage kerbs, stating that "these sausage kerbs are for GT cars with really soft suspension, and whenever a single-seater goes over these sausage kerbs, it launches the car".[10] Fitzgerald was able to return for the second round at the Circuit de Barcelona-Catalunya.[11]
On 1 July 2023, in a FRECA race at Spa-Francorchamps, Fitzgerald was involved in a multi-car chain reaction collision initiated when Tim Tramnitz lost control. Fitzgerald collided at high speed with Dilano van 't Hoff. The accident left the RPM driver with many broken bones whilst Van 't Hoff subsequently lost his life.[12][13] Due to his injuries, Fitzgerald was unable to compete in any of the remaining rounds.[14] He returned to training less than nine weeks after his serious crash.[15] He was 38th in the standings, with a best finish of 19th place.[16]
For his 2024 campaign, Fitzgerald switched to racing in America after that successful test, joining the USF Pro 2000 Championship with Turn 3 Motorsport.[18] Ahead of the Freedom 90, Fitzgerald announced he would not continue his championship campaign to focus on recovering from his back injury that he sustained in the crash in 2023.[19]