Season the beef roast generously with salt and pepper on all sides.
Place carrots, potatoes, onion, and garlic in the bottom of your slow cooker.
Place the seasoned roast on top of the vegetables.
In a small bowl, whisk together beef broth, tomato paste, thyme, and rosemary. Pour over the roast.
Cover and cook on low for 8 hours or high for 4-5 hours, until beef is fork-tender.
Remove roast and vegetables from slow cooker. Shred or slice the beef and serve with vegetables and a ladle of the cooking liquid as gravy.