I don't tri, but I ride. I have long hair that I used to just put in a ponytail. It would still get all tangled up from wind, sweat and sunscreen. Once I started braiding it, no more problems. To keep it secure, I pull it into a ponytail with tight rubberband. Braid it, and put one more rubberband at the end. It really keeps things neat and tangle-free.