Get ready to ignite fast-paced, head-to-head fun with the Impact Marble Racing collection from Atwood Toys — proudly designed and made in the USA. Whether starting with the Circuit Kit, stepping up to the Speedway, or going all-in with the Grand Prix, each modular track system delivers dynamic marble racing action. Mix and match straights, turns, and funnels to build your own custom layouts, and enjoy STEM-inspired creativity that kids and families love. Expand your collection with extra lanes, add-on packs, and official marbles for endless replay value and competition.