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Evo Triangle

A5 / A543 / B4501 · Cerrigydrudion → Cerrigydrudion (loop) · Wales

Length
20 miles
Drive time
30–40 min
Type
Technical road
Region
Wales

The legendary road-test loop over the Denbigh Moors used by Evo magazine. Fast, open, technical tarmac past Llyn Brenig reservoir — a favourite proving ground for performance cars. Note: average-speed cameras now operate on parts of the loop.

Three roads over the Denbigh Moors: A5, A543 and B4501, looping around Llyn Brenig from Cerrigydrudion. The tarmac is fast-looking, open, and technical in the magazine sense — long sightlines, crests, and a reservoir wall for a landmark. Average-speed cameras now cover parts of the loop. They are there because this became a proving ground, and they are not decorative. Drive it as a well-surfaced moorland circuit with a camera network, not as a test track that happens to be public.

There is no fuel anywhere on the triangle. Fill in Cerrigydrudion, Bala or Betws-y-Coed first. Y Llew Gwyn in Cerrigydrudion is the obvious start-and-finish food; Caffi Brenig at the Llyn Brenig visitor centre is the mid-loop stop with a proper car park and the water as the view. The cameras make a dawn blast pointless in the old sense; a weekday morning still has the road more or less to itself.

Pair it with Milltir Gerrig (B4391) over the Berwyn if you want a quieter, tighter road the same day, or with the Horseshoe Pass if you are based in Llangollen. The Snowdonia Great Escape already uses the triangle as a finish; it does not need inventing.

Evo magazine named the loop and ran cars here for years. That is why the cameras went in. Use the sightlines to see the sheep and the junctions, and let the average-speed system do what it was installed to do. The A543 over the Denbigh Moors is the open, camera-heavy leg; the B4501 past Brenig is the one with the water and the visitor traffic; the A5 is the trunk-road side with lorries. Drive the loop once, in that awareness, and do not run it as a flying lap. If the cameras ever come out, the sheep and the junctions will still be there.

Highlights of the Evo Triangle

Where to stop on the Evo Triangle

Drive the Evo Triangle

Open Evo Triangle on the map → ⬇ Download GPX

GPX works with Garmin, TomTom, Beeline and most bike sat-navs. Free, no sign-up — these are indicative waypoints, so follow the road signs, not the arrow.

Plot it, add it to a club run with a meeting point and pit stops, then share the whole trip as one link. Free, no account, works offline.

Route research: Bob Davies Car Sales Hub

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