How to Build a Safe Backyard Balance Beam for Kids

Build a simple, safe balance beam in your backyard using basic materials and tools for hours of active fun.

  1. Choose Your Materials. For a basic balance beam, you'll need a 2x4 inch piece of lumber (8-12 feet long works well for most yards), two concrete blocks or wooden support blocks, sandpaper, and wood stain or sealant if desired. Choose pressure-treated lumber if the beam will stay outside year-round. The 2x4 gives kids a 4-inch wide surface to practice on, which is perfect for beginners. You can upgrade to a 2x6 for a wider surface or 2x3 for more challenge as skills improve.
  2. Prepare the Beam. Sand your lumber thoroughly, paying special attention to all edges and corners. Start with medium-grit sandpaper, then finish with fine-grit for a smooth surface. Round the sharp edges slightly so they're comfortable for little hands and feet. If you want to protect the wood from weather, apply a clear outdoor wood sealant, but skip stains or paints that might make the surface slippery when wet.
  3. Set Up Support Blocks. Place your support blocks about 6-8 feet apart on level ground. Concrete blocks work well because they're heavy and stable, but you can also use wooden blocks or even stack a few bricks. For beginners, start with the beam directly on the ground or just 1-2 inches high. As confidence grows, you can gradually raise the height by adding more blocks, but keep it under 8 inches for safety.
  4. Position and Test the Beam. Center your beam on the support blocks, making sure both ends extend at least 6 inches beyond each support for stability. Walk the beam yourself first to check that it doesn't wobble or slide. The beam should feel solid and not tip when weight shifts to one side. If it moves at all, adjust your supports or add rubber pads under the beam to prevent sliding.
  5. Create a Safe Practice Area. Clear at least 3 feet of space on both sides of the beam and 2 feet at each end. Remove any rocks, sticks, or toys from the area. Consider laying down gym mats, old mattresses, or even just thick towels on both sides for extra safety, especially when kids are learning. Choose a level spot in your yard away from trees, fences, or other obstacles.