A PROPERLY EQUIPPED ROAD BIKE FOR TACKLING LONGER DISTANCES
What's more, do not imagine that you will only need a road bike for one year and you will need to replace it with a triathlon bike in the following year. A road bike that has been customised with certain strategic components specifically designed for triathlon will last much longer than one year. In my case, I took part in the Ironman 70.3 world championships with an optimised road bike and I can tell you that the limiting factor was the cyclist, not the bike!
Moreover, with a road bike, you can enjoy the route and exceptional scenery more without being scared in the downhill sections!
So, no doubt you will want to know why triathlon bikes exist?
In my opinion, they exist because it is a fact that 20% of aerodynamic drag comes from the bike and the more aggressive riding positions can only be achieved on a triathlon bike. These two factors are less important for most sportsmen and women, but they can clearly make a difference at a world championship event. It's up to each individual to analyse the factors that are preventing them from wiping off the minutes they still need to achieve their target.