You could but I wouldn't recommend it. 3 servings of CR = 960mg of sodium compared to 1 serving of 333 = 440mg of sodium. Each product has been formulated for it's specific purpose. If you like to eat real food during your training and racing, go with the CR, if you don't want to mess around with food, go with the 333. If you have very specific needs you can mix the two products to achieve your optimal amount of calories and electrolytes. They taste great together!