5'8.5''-5'9''. Was only 5'6'' entering senior year of high school and randomly had a 3 inch growth spurt sometime between early October to mid November. I only noticed it when someone else told me I look at least 2-3 inches taller... I think it was some random college freshman who came back to visit one weekend. Ended up going home and measuring my height and noticed I grew 2.5-3 inches. I had a massive growth spurt from like 5'0'' to 5'6''. My parents are both within that height so I thought I was done growing.
Older brother grew to 5'10''. Was around 5'8'' at high school graduation.