The Magnetic Marble Run - 50 Piece STEM Building Set

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  • An innovative engineering kit with endless possibilities for having tons of fun while exploring physics!
  • This STEM marble maze for kids and adults can be built on any magnetic surface like refrigerators, lockers, whiteboards, workbenches.
  • Includes 33 tracks & connectors, 6 trick pieces & 10 marbles for infinite building combinations and endless amounts of creative fun.


National Geographic 50-Piece Magnetic Marble Run STEM Building Set brings a new level of excitement to building a marble maze! With its innovative magnetic connectors, kids and adults alike can build, create and explore engineering on any magnetic surface.

This STEM marble run set provides everything you need:

  • 18 magnetic connectors
  • 11 track pieces
  • 10 trick pieces - funnel, pole, 2 spinners, 4 U-turns, bell & switch
  • 10 marbles
  • Storage bag
  • Detailed instructions & fact-filled Learning Guide
  • Product Dimensions 11 x 2.38 x 12 inches
  • Item Weight 1.02 pounds
  • Manufacturer recommended age 8 years and up

Our SmartKidsPlanet initiative began in 2017 when 3 geeky and dedicated parents saw a gap in the children’s toys and games market. An opportunity was spotted while we struggled to find toys and games for our kids which enriched their minds and guided them toward science, art, math and construction. The trio then knew that their paths were set, establishing an online shop with a comprehensive range of intelligent toys for babies, children and young teenagers.

With offices based in California, our SmartKidsPlanet team enjoys a daily growth in our presence within the children’s educational toys market. We love our new place in life, and we love helping young minds with their growth and skill development, all while having as much fun as possible.


We ship all our products directly to you from our warehouses located in multiple locations in the West and East Coasts.

Processing Time: All orders placed after 2 PM EST will be shipped the next business day. Orders placed after 2 PM EST Friday will be shipped on Monday. 

Orders are shipped and generally arrive within 2 to 3 business days after the order is processed. Tracking information will be sent via email once your order has been processed. The tracking number may not become active for 24 - 48 hrs.

Kindly take note that due to our business utilizing multiple warehouses within the United States, orders of more than one item may arrive as separate deliveries at different times. 

Orders made to PO BOX may take up to 12 days. Additionally, we do not ship to military bases. Hawaii and Alaska

Customer Reviews

Based on 15 reviews
Patrick Pena
Very fun for middle school kids

Easy to put together the magnetic board , wish it was bigger and easier to hang on the wall but we attached it to the window . 10 & 11 year old enjoyed designing the marble run .

Eric Matthews
Great toy

Great gift, sturdy and durable, strong magnets, fun and easy to use! Would buy again!

Dawson Ray
My six year old loves this! Fun to make many different runs!

We purchased this for my six year old's birthday. He loves playing with this. At first it was a bit hard to figure out but once we figured out how the pieces fit on the magnets then it was a blast! I also have to mention that the customer service from this company is absolutely amazing. We had a little mishap and it was fixed right away!!

Tristan Delgado
Works as one would expect

It works well. Unfortunately not a lot of magnetic connectors so you can۪t really use all of the pieces at once.

Avery Perkins
Develops great thinking and building skills

The marble maze pieces are awesome and challenge my granddaughters to think about the ways they can use the pieces to keep the marble rolling down. They have come up with very well done maze set ups that run 4 feel from top to bottom. They then start building a different maze! Nana's and other adults love to help! Great STEM project.




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