welcome to TE. I've never been in a tri, but i'm 56 years old. I don't know your capabilities, nor your sticktoitiveness; but there are lots of gals here who do tri's.

how much time do you have to train? when's the tri? You are probably the best judge of your own abilities here.

Sit down, read the forum and get to know us. post a few times, let us get to know you.
mimi