If your are having problems building a roller coaster on the standard Minecraft terrain, try creating a new game with a flat world. When creating a new world on the title screen, simply select More World Options (Java Edition only) and select Flat (Bedrock Edition) or Superflat (Java Edition) before starting your world.
Wood can be gathered from trees all over the overworld map. Simply punch trees or use chop them with an axe to get wood. Iron ore is found underground and mined using a stone, iron, or diamond pickaxe. It resembles stone blocks with yellow spots in it. You can then smelt iron ore in a furnace to get iron ingots. Redstone ore is found deep underground. It resembles stone blocks with red spots on it. Mine redstone ore with an iron or diamond pickaxe to get redstone dust. Gold ore can be found underground and mined using an iron or diamond pickaxe. You can smelt the iron ore in a furnace to get gold ingots.
Crafting table. A crafting table is needed to craft most items in Minecraft. It is crafted from 4 wood blocks in the crafting menu. Wooden Planks: These can be used to build the frame for your roller coaster. They can be crafted using 2 wooden blocks in the crafting menu. You do not need a crafting table to craft wooden planks. Sticks: Sticks are one part needed to craft rails needed to construct the roller coaster tracks. They can also be used to craft fence posts that can be used as scaffolding. Button: A button can be used to start your roller coaster in the loading station. Buttons can be crafted from a single wooden plank block or stone block using a crafting table. You can also use a lever. Rails: You can craft 16 rails from 6 iron ingots and a stick using a crafting table. These are used to build your track. Stone Pressure Plates: You can craft a stone pressure plate from 2 stone blocks using a crafting table. These are used to build detector rails. [1] X Research source Detector Rails: Detector rails are tracks that detect when a minecart is on top of them and activate redstone circuits. They can be used to activate powered rails on a roller coaster. 6 detector rails can be crafted from 6 iron ingots, 1 redstone dust, and 1 stone pressure using a crafting table. [2] X Research source Powered Rails: Powered Rails can give your roller coaster a speed boost. 6 powered rails can be crafted from 6 gold ingots, a stick and some redstone using a crafting table. Minecart: A minecart is used to ride your roller coaster It can be crafted from 5 iron bars using a crafting table. Fence (Optional). Wooden fences can be used to craft the scaffolding for your roller coaster. This is purely decorative and entirely optional.
Dig a trench three blocks wide and one block deep. Place two powered rails in the trench. One at the back of the trench and the other in the center. Place a block with a button above the trench and to the side. The button should be reachable from within the trench. Use redstone dust to connect the button to the powered rails. Redstone dust can be placed below the block with the button and the powered rail. Place a minecart on the first powered rail.
Speed boosters require straight, flat tracks to work. They do not work on inclines or diagonal tracks. When powered rails are not powered by redstone, they slow down and stop the minecart. Placing more than 2 powered rails after the detector rail will slow down the minecart.
If your roller coaster does not have enough speed to get over the top of a hill, you can add more speed booster rails before the hill, or you can make the previous hill taller so that you get more momentum on the downward slope. To make the “sky hills” more believable, add supports to your track.
Use the natural terrain to your full advantage. Try making the track go into a cave, or dip down into a ravine, or soar over a mountain. It makes the ride a lot more interesting.
Make sure you place enough lighting around the track, so mobs can’t come too close to the roller coaster.
You don’t need just one loading station. You can build multiple loading stations throughout your map and have a roller coaster rail system that makes for a fun way to get to different points on your map.
