How to place an order? 08 August 2019 13:49 Updated To place an order, please log into your Decathlon customer account. If you do not have an account yet, go to our website and click on "register" in the "I don't have a Decathlon account" box. After choosing the size and colour you want, click on "Buy" and follow the instructions to place your order. Related articles In-store booking How to cancel my order? Do I have to pay for delivery? Our different payment methods Is it possible to change the delivery address after placing an order?