Do you think no one ever told Usain Bolt "It doesn't matter how hard you practice, you're not going to run faster than $previous_record_holder"?
I wouldn't say Usain Bolt is talented because he's the faster runner. Majority reason why he is so fast is because of the amount distance he can cover with his leg stretch over his opponents due to his height; not his talented ability to quickly move one foot in front of another (just like ever professional runner has)
Physical makeup and mental makeup both count as talent.
Physical is easier to measure, but mental is just as real.
That's funny, it used to be that one would never run faster than a 4-minute mile.