Do you want to save 5 cents a gallon every time you fill up your tank? Marathon is making it easier than ever before. A new promotion, available only at participating locations, allows you to enter a 4 digit code at the pump and save 5 cents a gallon instantly. You can find the code, which resets daily, as well as participating locations through the GasBuddy app. For your convenience we've also provided a direct link to the daily code here on our site. Simply click the banner and start saving toady!