you get wto kinds of spd pedals, so make sure your shoes you get are compatible ..the spd sl one which majority of road bikes use have the screw holes in the shoes in a triangle formation ,, the spd which i have used ,some say more a mtb pedal but ,ii know a few on the road who use em inc tris and ironman ,these holes are just the 2 in a horizontal position ,,these pedal you can clip in both top and bottom so might be easier to clip in for you ,, some shoes have both sets of holes ,,,,,btw sports direct do a carbon soled road shoe at 60 quid the cheapest youll find