How long is Trail Creek Road?

Nestled on the border of Blaine and Custer counties in Idaho, Trail Creek Road is a mountain drive you won't soon forget.

Clocking in at just over 40 miles, this road (also known as 408) winds its way from Ketchum to Highway 93, near the tiny town of Chilly.

The pavement doesn’t last long, quickly giving way to gravel. Be prepared for a good chunk of the road to be dirt and rocks that might just be plotting to eat your tires! The views are stunning, but keep an eye out – there's a crazy steep drop-off and sections where it's practically a one-lane gravel track. You don’t need a 4x4, but be ready for some rocks and potholes.

This drive is a legit challenge. Seriously, not for newbie mountain drivers – one wrong move and you’re in trouble. That's why you won't see big rigs or trailers allowed. Expect steep climbs, and there's a good chance you'll learn how to change a flat.

Seriously, check that spare tire (full-size, not a donut!) before you go, and make sure it’s in tip-top shape. Rockslides and washouts aren't uncommon.

Keep your eyes glued to the road, even though the view is incredible.

Give yourself 1-2 hours to conquer this road without stops, though you'll probably want to pad that time to soak in the scenery. It all depends on the road conditions and how often you pull over to take photos.

Topping out at over 7,900 feet above sea level at Trail Creek Summit, this gravel road is impassable in winter. It's closed when the snow piles up, opening again when the weather warms up.

Winter often brings damage from avalanches of dirt and rock.