you are very far from 11 sec. Maybe 12.5. Im a masters guy (41yo) running 11.6/11.8FAT and I had to work at it. I started at 12.63 FAT 4 years ago. I took about 3 years before I got break 12 consistently thats the bad news. The good news is if you are consistent and can manage to train with out getting injured you can get under 12 in a year even better is that you can improve after you break 12 if you train properly and consistently. I think I took me longer because I train by myself. I think if I were to hook up with some young guys to push me I think I can run 11 low. The main thing is to get in shape first that makes sprint training more tolerable. Take care of those old ass achillies you’re no spring chicken 