The Devil’s Staircase is a short, steep road climb on the route from Abergwesyn towards Tregaron in mid-Wales. Its tight bends and sharp changes in gradient make it harder than a simple distance figure suggests. The main challenge is keeping a manageable effort and enough traction through the steep ramps, with more remote riding still ahead.
How long and steep is the climb?
Figures vary according to where the measured segment begins and ends. The 2026 Dragon Ride climbs guide describes a core section of around 1.3km with roughly 150m of height gain. That should not be confused with the longer approach or the total climbing on the Abergwesyn road.
Expect ramps steeper than 20%, with quoted maximum gradients varying between measurements. A brief maximum and a whole-climb average describe different things. For planning, the important point is that you need gearing and control for very steep corners, not merely the endurance for a short climb.
Approaching from Abergwesyn
Llanwrtyd Wells provides one possible starting point for a larger ride through Abergwesyn. Plot the entire route before leaving, including the climbing after the Staircase and your return. The road across the hills is not a short link that becomes flat once the famous section is finished.
Gearing and pacing
Choose a low gear before the gradient increases sharply. Waiting until you are pushing hard through a bend can make shifting awkward and increase the chance of stalling. Keep the early effort controlled enough to handle the next ramp rather than sprinting into the first steep section.
On damp or loose surfaces, smooth pressure on the pedals helps maintain traction. Stay on your own side of the road; taking a wider line around a hairpin is not a reason to enter an unseen vehicle’s path. If you need to stop or walk, do it somewhere visible and clear of traffic.
A low gear is more useful here than a high top speed. Our Shimano 105 gearing guide gives examples of road-bike ratios, while the Horseshoe Pass guide offers a different style of Welsh road climb to compare with the Staircase’s sharper ramps.
Conditions and supplies
This is a rural public road, not a closed cycling course. Watch for vehicles, livestock, wet leaves, loose material and changing surfaces. Carry a layer suitable for exposed hills, food, water and a repair kit, and check the forecast and any road restrictions before travelling.
Do not rely on finding a café at the top or on having a strong phone signal throughout the ride. Save the route for offline use and let someone know your plan if riding alone. On the descent, control speed before bends and allow room to stop within what you can see.
Simon Warren’s Cycling Climbs of Wales is an additional planning option. This is an affiliate link. A printed guide can help identify climbs, but current signs and access restrictions take priority over any book or saved route.
Building a Welsh climbing trip
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Photo Credit: Cor Vos
Keep the geography in mind: the Devil’s Staircase is in mid-Wales, so it is not a short extension to a ride around Llanberis or Llandudno. If you are planning several days in different areas, our North Wales and Eryri climb guide provides a separate selection.
Allow more time than the distance alone suggests, particularly with luggage or a group of mixed abilities. The best route is one that leaves enough energy and daylight for the whole ride, including the descent and the roads back to your starting point.
