I am doing an Olympic Triathlon(25 mile bike portion) in 6 weeks and I want to purchase a road bike for the race and possibly for use in other triathlons. Thus far I have been renting bikes for long rides and cycling in the gym but there are so many different makers, parts and combinations that I am finding it hard to tell what I need and what that price should be getting me. I would like to purchase one for around $700 or even less than that. I am 5'8" and 170lbs.
I have seen these two, both of which were on sale. Any help you can give would be great!