Phase 1 · engine preview

Twistly

AllTrails for drivers and riders.

Twistly scores every road in Britain by its actual radius of curvature, then builds routes out of the good ones — rather than asking a router for the fastest way and hoping. Pick a start, say how far you want to go, and it will find you the roads.

Describe the drive you want

or set it yourself

Start from

Distance — 60 km

Twistiness — 85%

How hard to push for good roads over getting the distance exactly right.

Avoid towns and villages

Pick a start and press Plan my drive

Curvy distance

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Distance

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Est. time

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Curviness

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How it picks roads

Every road is scored on curvy metres — how many metres of genuine curve it actually gives you. That matters more than it sounds: housing estates are the curviest thing in the map, all tight bends and no driving, and ranking on curvature alone picks them every time. The Cat & Fiddle is eight kilometres of sustained curve; a cul-de-sac is four hundred metres of hairpins.

Routes are then measured again once built, including every connecting road, so what you see is what you would actually drive.