Any fruit can go with peaches. If you're making a smoothie or fruit salad, good fruits to pick are strawberries, mango, cantaloupe, or even pears. Try to stay away from citric fruits like oranges as they will overpower the flavor of the peach.
Peaches are a stone fruit that is at its best in the summer. It usually goes well with other summer fruit and some spring fruit such as sweet dark cherries, strawberries, apricots, nectarines, pears and mangoes.