[TABLECONTEXT] : president : John Quincy Adams | [TABLECONTEXT] : [title] : List of Presidents of the United States by age | John Quincy Adams : duration : 2 years, 260 days | John Quincy Adams : age_at_end_date : 80 years, 227 days
John Quincy Adams served as the US President for 2 years, 260 days, with an age 80 years, 227 days at his end date.