Paul Newman was 47 when he started racing. 2nd at Le Mans in 1975 (age 50). Age 70, he shared the win in the GTS-1 class (and third overall) at the 1995 Daytona 24 Hours. He took part in the 2005 24 Hours, age 80. Hope for us all! 
Aged 79, New Zealand's Ken Smith last entered the NZ GP in 2021 - a covid year, but in the three GP's before that he shared the track with the likes of Robert Shwartzman, Liam Lawson and Yuki Tsunoda in Toyota Racing Series cars.
Smith is a three time winner of the event, in 2004, 1990 and 1976. He first entered the NZ GP in 1964, in the inaugural year of the Tasman series, in which he shared the track with the likes of Phil Hill, Lex Davison and Jimmy Clark.
American Hershel McGriff raced in various NASCAR series for decades, retiring in 2002 but returned to local NASCAR races for one offs many times after that. For the last time he did that in 2018, aged 91.
Returns weren't out of character for McGriff - the first time he retired was in 1954, having won several NASCAR Grand National races that season. His most famous achievement is probably winning the inaugural Carrera Panamericana in 1950.
Sobieslaw Zasada competed in the 2021 Safari Rally in a WRC3 and was reasonably competitive, outpacing other drivers in the category, but he did not finish due to an accident few kilometres from the finish.
The Pole's international rally career had begun 60 years earlier, aged 31 in 1961 at the Acropolis Rally and he was the winner of the 1966 European Rally Championship. When Hitler died in 1945, Zasada was 15.
Edited by noriaki, 01 August 2023 - 09:56.