How many miles is too many for this car

Not biased because I own one- but mine has 267,000 and doing great. I might add I bought it from an individual who owned it for 8 years did nothing but oil changes. In my zip code ( Tennessee ) I continually see them with over 300,000 on them and still doing great. Just adding my 2 cents. Every case is different of course but they were well made cars.