Here are the steps on how to use Promo Codes when shopping at charmcityrun.com: You need to log in to your existing account at charmcityrun.com or create a new account of your own; then, to select a product, you can browse the charmcityrun.com product page to select a product and add it to your cart. Occasionally, they will offer you discounted products up to 50%. Then, click Pay to enter the payment page, you can see the prompt [Use your Coupon Codes], check the Charm City Run Coupons of your choice, and then return to the checkout page and click Pay.