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The Evo Triangle (A5, A543, B4501): a driver’s guide

The Evo Triangle is one of the best-known driving roads in Wales. If you’ve ever read a UK road test, you’ve probably seen it on a magazine cover. We drove it with 20 cars on the Welsh Route in May 2025, and this is what we’d tell any driver planning their own visit.

It’s a brilliant place to drive and a place that demands respect. Here’s where it is, how it’s policed and how to enjoy it properly.

Route GT driving tour photography from the road
The Welsh Route 2025: twenty cars, two days and some of Wales’ best-known roads.

What is the Evo Triangle?

The Evo Triangle is made up of three roads, the A5, the A543 and the B4501. They connect the villages of Pentrefoelas and Cerrigydrudion with the Llyn Brenig reservoir, on the edge of Snowdonia in Denbighshire and Conwy. Evo magazine’s road tests made the name famous, and every year drivers and riders travel from across the country to drive it.

The three roads

  • A5: the section between Pentrefoelas and Cerrigydrudion forms one side of the triangle.
  • A543: the road across the Denbigh Moors, passing the Sportsmans Arms. It’s the side with the highest collision record.
  • B4501: the road that runs past Llyn Brenig and links the other two.

Safety first: the cameras and the history

The Evo Triangle has a serious safety record. Several fatal crashes led the Welsh Government to fund a £500,000 road safety scheme. Average speed cameras went in on the A543 first, in April 2019, and the B4501 and the A5 followed. Cameras now cover nearly 40 km of the route. On the A543, casualties fell by 63% after they were installed.

The message is simple. Drive within the limits, expect other road users, and treat the roads as a place you share with locals, cyclists, motorcyclists and farm traffic. Limits and enforcement can change, so check the signs and current local information when you go.

Sharing the road: our tours are social drives, never races.

How we drove it on the 2025 Welsh Route

Our first day began over Milltir Cerrig Pass, with a coffee stop at Rhug Farm Shop before the group ran through the Evo Triangle. We stopped for lunch in Betws-y-Coed and carried on through Snowdonia, finishing with a line-up of the cars at Black Rock Sands. 

That’s how we think the Evo Triangle is best enjoyed: as part of a day with good stops and the right company, and not as a single road to rush. Our tours are non-competitive, and every driver sets their own pace and obeys the limits. Read the full Welsh Route 2025 story.

Tips for driving the Evo Triangle

  • Go early or midweek. Weekends and summer afternoons are busy with other drivers and riders.
  • Stay within the limits. The average speed cameras measure your speed across the whole section, not just at one point.
  • Plan your stops. Rhug Farm Shop and Betws-y-Coed are good places to break the day.
  • Check your car. Tyres, brakes and fluids matter on moorland roads.
  • Respect the locals. This is a living area, so keep noise and speed down near homes and farms.
More than one famous road: the Welsh Route links valleys, passes and moorland.

The Welsh Route

The 2027 Welsh Route runs from Chepstow to the edge of North Wales on 10–12 June, linking Brecon, Elan Valley, Mid Wales and Snowdonia with two hotel stops. It’s currently running a reserve list, with a maximum of 20 cars. Your payments are protected through PTS. See how.

Questions about the Evo Triangle

Where is the Evo Triangle?
In North Wales, on the edge of Snowdonia, around Pentrefoelas, Cerrigydrudion and Llyn Brenig in Denbighshire and Conwy.

Which roads make up the Evo Triangle?
The A5, the A543 and the B4501.

Are there speed cameras on the Evo Triangle?
Yes. Average speed cameras have been installed on all three roads and cover nearly 40 km of the route.

Is the Evo Triangle a race track?
No. They are public roads with ordinary speed limits, local traffic and enforcement.

Can I drive the Evo Triangle on a Route GT tour?
We drove it on the 2025 Welsh Route, which was non-competitive, with each driver setting their own pace. Check the current tour page for the roads on each year’s route.

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