I believe the title is a great fit for the book. Most americans aren't into triathlons ,but one triathlon airs on NBC every year, Ironman. Ironman is the end all be all of triathlons hosted in Hawaii. Since my book is about triathlons of course it's perfect. If I had to pick alternate titles it would be "three legs" or "endure". Triathlons are three legs long and take endurance.