In order to mount your pedal cleats to your shoes, they must have matching bolt patterns (pedals come with cleats, shoes come without). The three common cleat configurations on cycling shoes are SPD-R, Look/SPD-SL and SPD. The illustrations above show the bolt-hole patterns found on the shoe soles for each cleat type.
Road shoes feature one, two or even all three of these patterns. There is also a 4-bolt pattern for Speedplay cleats but it's rare (Speedplay cleats also fit on shoes that have the common Look/SPD-SL pattern).
Mountain-bike shoes usually use the SPD pattern.
If you're unsure what bolt pattern your shoes and pedals have, please contact us. We're here to help!