Zip wire slope calculator

Work out whether your garden has the drop, and exactly how high each end needs to be. Nothing to send us — it's all here.

Side view. Heights are exaggerated so you can see the shape.
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Slope of your run · aim for 6–8%
Distance between your two anchor points
Measured along the ground. Pacing it out is fine — one adult stride is about 0.75m.
metres
Does the ground slope along the run?
Looking from the start towards the finish.
Cable height at the start (the launch)
How far above the ground the cable will be fixed — up the tree, or the height of the post above ground.
metres
Cable height at the finish
Keep at least 2m so a rider's feet clear the ground on arrival.
metres
  • Total drop start to finish—
  • Drop we recommend (6–8%)—
  • Cable height needed at the start—
  • If the start is a post, order—
  • Clearance at the finish—
Post lengths include 2 metres in the ground. Anything much beyond a 7 metre post stops being a garden job and becomes a structural build — at that point you want a tree, a shorter run, or a bank to launch from.
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