Pacheco Pass

Pacheco Pass cycling climb profile

Pacheco Pass is a short, contained effort by climbing standards, but the numbers make it clear that it should not be treated like a casual roller. The climb is 4 km long, averages 6.93%, and is rated Category 3. Starting at 255 m and topping out at 531 m, it gains 276 m from bottom to summit.

That combination matters. A 4 km climb is long enough that a hard start can punish you before the summit, but short enough that strong riders will be tempted to ride above sustainable threshold from the lower slopes. The average gradient near 7% suggests a climb that rewards controlled power rather than momentum, while the maximum gradient of 12.75% means there is at least one section steep enough to break rhythm and force a gearing or cadence change.

How the gradient shapes the ride

On paper, Pacheco Pass sits in the awkward middle ground between a punchy hill and a sustained mountain climb. The average gradient is high enough that drafting and speed preservation become less important than power management, but the overall length keeps the effort compact. This is the type of climb where the cost of overreaching early is not always immediate. You can feel fine for the first half, then lose cadence once the steeper ramps arrive.

The key feature is the gap between the 6.93% average and the 12.75% maximum. That spread tells you not to pace it as a perfectly even grade. There will be moments where the climb asks for more torque than the average number implies. If you ride the lower section at the top of your sustainable range, those steeper pitches can push you into a costly surge.

Pacing and gearing notes

Treat the first part as a setup, not a launch. Settle into a gear that lets you keep pressure on the pedals without grinding, then save a small reserve for the steepest section. On a climb this short, the best pacing is firm but disciplined - close to a sustained climbing effort, not a repeated series of attacks.

If you are pacing by FTP, avoid turning the opening minutes into a maximal effort. The 12.75% maximum gradient is the part that decides whether the climb feels smooth or ragged. Shift before the steepest ramps rather than waiting until cadence collapses. A lower gear is not a defensive choice here - it is how you keep the effort aerobic enough to finish strongly.

For training, Pacheco Pass is well suited to threshold-style work or controlled over-under efforts. The total length gives enough time for meaningful stress, while the steeper maximum pitch adds a useful strength component. Ride it patiently, keep the cadence alive, and the summit will come to you. Chase the average too aggressively, and the steepest section will make the climb feel longer than 4 km.