Performance road bike shoes are necessary for any serious road bike cyclist. You will need to attach cleats to the bottoms of the shoes, which fit with your pedal mechanism, so you need to make sure you buy compatible parts. Budget is important as you can buy the bottom of the range for beginners or those wishing to budget and at the top of the range are the carbon road bike shoes which are over £200 plus. Like buying any shoes, different brand sizes fit different feet so be aware of this when buying and if you have found a comfortable shoes in the past stick with that brand. There are also a range of triathlon and women's shoes to be seen from the different retailers.