Dunckley Pass

Dunckley Pass cycling climb profile

Dunckley Pass is a compact, steady US climb rather than a long attritional pass. The headline numbers are controlled but still meaningful: 3.4 km at an average gradient of 5.29%, starting at 2216 m and summiting at 2394 m. With a listed category 4 rating, it sits in the zone where pacing discipline matters more than survival climbing.

The most useful detail is the narrow gap between the average gradient and the maximum gradient. An average of 5.29% and a maximum of 6.19% suggests a climb without violent ramps. That changes how it should be ridden. This is not a climb where the main risk is one savage pitch that forces a gear change and spikes the legs. The risk is more subtle: riding the opening too hard because the gradient feels manageable, then paying for it as the effort accumulates.

How the gradient unfolds

Based on the available profile stats, Dunckley Pass should ride as a mostly aerobic, tempo-style ascent. The gradient is firm enough that there is little value in constantly surging, but not steep enough to demand a low-cadence grind unless fatigue or gearing forces it.

The listed total ascent is 163 m, while the start and summit elevations show a 178 m difference from bottom to top. Either way, the climb is defined by a moderate vertical gain over a short distance. That makes it especially easy to underestimate. On paper, 3.4 km is not long, but at this elevation, a rider who treats the first half like a threshold test can quickly turn a controlled climb into damage limitation.

Pacing strategy

The cleanest approach is to ride the first third slightly under control, then let the effort build. Because the maximum gradient is only 6.19%, there is little tactical need to pre-empt steep sections. Instead, the best pacing model is even pressure on the pedals and a controlled breathing rhythm.

For riders using power, this is a good climb to anchor around a sustainable climbing effort relative to /glossary/ftp rather than chasing speed. The gradient is steady enough that power will tell the truth. If the number is drifting above target early, back off. There is not enough climb length to recover from an overreach and still finish strongly.

Gearing notes

A normal climbing gear should be enough for most riders, but the elevation and steady gradient make cadence important. Choose a gear that lets you stay seated and smooth through the bulk of the ascent. If cadence starts falling while the gradient has not changed much, that is usually a pacing problem, not a gearing problem.

The best ride on Dunckley Pass is measured, not reactive: settle early, avoid unnecessary surges, and use the final section only after the effort is clearly under control.