Preheat the oven to 400˚F.
In a large bowl, mix together the potatoes, carrots, onion, and beets. Set aside.
In a small bowl, mix together the olive oil, balsamic vinegar, salt, pepper, rosemary and parsley. Pour over the vegetables, and mix until the veggies are fully coated.
Pour your vegetables on a rimmed baking sheet, and spread them out so that they are in one layer.
Roast the vegetables in the preheated oven for 20 minutes. Remove to stir, and return to the oven to cook for another 20-25 minutes.