Why Arizona's ‘The Devil’s Highway’ was built by engineers to have over 400 curves in 120 miles that challenge even expert drivers
Published on Mar 18, 2026 at 2:47 PM (UTC+4)
by Ben Thompson
Last updated on Mar 18, 2026 at 2:47 PM (UTC+4)
Edited by
Emma Matthews
It stretches out over 120 miles and contains more than 400 curves – it’s no wonder they call US Route 191 the Devil’s Highway.
Running through Arizona, this remote highway cuts through the state’s eastern mountains.
The section between Clifton and Alpine is infamous, filled with tight turns and steep drops.
With no major towns for miles and stomach-turning twists, this is not a drive for the faint of heart.
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Here’s what you need to know if you want to take a trip on the Devil’s Highway
Ranked as one of the most challenging drives in the US, the Devil’s Highway is a huge draw for drivers wanting to test themselves.
Historically, the road has had a reputation for dangerous driving conditions and eerie stories.
It’s no wonder – it was known as Route 666 until 2003.
And it’s not just the stuff of folklore either.
Essayist Luis Alberto Urrea wrote a book about the highway in 2014, detailing the story of 26 men who attempted to cross it on foot back in 2001.
Only 12 men made it out alive.
These days, it’s drivers and motorcyclists who are taking on the region, with countless videos documenting the trip available on YouTube.
Seeing the highway is enough to make your palms sweaty.
If you’re going to take this on, you’d better know what you’re doing – there’s no guardrails for most of this route.
These roads are not for inexperienced drivers
There’s plenty of roads around the world that will test the nerve of any driver.
In Bolivia, there’s ‘Death Road’ – a 37-mile stretch of road regarded as the most dangerous in the world.
Even Jeremy Clarkson had a hard time while driving along it.
There’s a similarly dangerous road over in China, which weaves in and out of the mountain peaks.
And even then, roads have to be winding to prove treacherous – just take a look at the world’s straightest road in Saudi Arabia for proof of that.
Suffice to say, you’d better know what you’re doing before you take on any of these roads.
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Following stints at LadBible, The Sun, The New York Post, and the Daily Mail, Ben joined the team full-time in February 2025. In his role as Senior Content Writer, his sparkling copy, the ability to sniff out a good story at 100 paces, and a GSOH quickly led to him becoming an integral and invaluable member of the writing staff.
