1. Preheat oven to 425°.
2. Scrub beets and trim tops to 1 inch. Place beets in a glass or ceramic baking dish; fill dish one-third full with water. Cover with foil; bake at 425° for 1 hour or until beets are tender. Cool. Peel beets, and cut into 1/4-inch-thick slices. Core tomatoes; cut into 1/4-inch-thick slices. Arrange the beet and tomato slices on a platter; sprinkle with 1/2 teaspoon salt and pepper.
3. Combine remaining 1/4 teaspoon salt, oil, 1 tablespoon juice, honey, and shallot in a medium bowl. Toss peach slices with remaining 1 tablespoon juice. Add peach mixture to honey mixture; toss. Mound peach mixture on top of beet and tomato slices; sprinkle salad with the mint, thyme, and goat cheese.