Shell Fuel in Callaway, MD offers premium gasoline and diesel at unbeatable prices, 24 hours a day. Want to save even more? Our unique Value Days program offers fuel savings up to 20 cents per gallon on Mondays, Tuesday and Thursdays. Visitors can also enjoy our fully stocked convenience market with freshly prepared food and hot coffee. We proudly offer 24 /7 wheelchair accessible restrooms. Come visit us today!