A member of the Borders Elite Swim Team and Kelso Swimming Club 13-year-old Armstrong is a regular at the Borders Sports Academy and has recently graduated from the Borders Athlete Support Programme to the Scottish Institute of Sport.
She does eight pool and land training sessions per week and attends one to two competitions per month.
The youngster has been selected for the East District Team three times and the Scottish Schools Team and been a medallist at the British Age Group Championships for each of the past three seasons.
When it comes to record breaking, her performances have been nothing short of phenomenal, breaking dozens of District and Scottish Age Group Records.
Her list of Scottish age group titles is no less impressive – 17 in the past two years.