This depends on the species of turtle. The lifespans vary significantly from species to species.
For example, big green sea turtles that live in the sea (obviously!) can live for 100's of years, whereas a small short-knecked Murray turtle that a lot of people have as pets (me included) can live up to around 50years.
These can depend a lot upon the health of the turtle, and other factors.
how long do mud turtles live?
Musk turtles live about 30yrs
how long do turtles live with out food? how long do turtles live with out food?
Texas Cooter turtles can live 40 years or longer. They are very hearty turtles.
The long neck turtles live in Eastern Australia. The long neck turtle can live for as long as a 100 years.
about 100 years
tortoise's are known to live up to 90 years, it depends on how well you look after your tortoise
they live over 100 years
Turtles can live for a very long time. Many in fact can outlive humans, depending on the species. Sea turtles, for example, can live up to 150 years.
170 years
i smell cheese
Round about 5years