Irshad Pass

Irshad Pass cycling climb profile

Irshad Pass is an HC climb that looks manageable if you only glance at the average gradient, then becomes a very different proposition once the full profile numbers settle in. The climb runs for 26.6 km at an average of 5.73%, starting at 3401 m and finishing at 4927 m. That means the difficulty is not just the road rising - it is the road rising for a long time while already sitting at serious elevation.

The headline detail is the maximum gradient of 27.81%. That single number changes how this climb should be approached. A 5.73% average over 26.6 km suggests a sustained aerobic effort, but a ramp close to 28% means the gradient cannot be treated as steady-state. Even if those steep sections are brief, they force large torque demands and can punch through a pacing plan if the rider arrives overgeared or already above threshold.

How the gradient rides

From the stats alone, this is best understood as a long endurance climb with disruptive steep pitches rather than a smooth metronomic ascent. The elevation gain is substantial, with the pass rising from 3401 m to 4927 m, so the climb accumulates fatigue through duration before the steepest gradients even matter.

The average gradient tells you the bulk of the climb is not absurdly steep, but the maximum gradient tells you there are sections where momentum will disappear quickly. That combination is important tactically: the climb rewards patience on the moderate gradients and restraint before the steepest ramps. Riding the lower slopes as if the average gradient is the whole story is the mistake. The profile has enough severity to punish early enthusiasm.

Pacing and gearing notes

Pace Irshad Pass by effort, not speed. At this elevation and over this length, speed will vary sharply with gradient, and chasing a consistent pace risks pushing well above sustainable output on the steep sections. Use your /glossary/ftp as a ceiling, not a target, especially early in the climb.

Gearing should be chosen for survival on the maximum gradient, not efficiency on the average gradient. A compact climbing setup and the easiest cassette option available make sense here because the 27.81% maximum is the limiter. If you run out of gear on those ramps, cadence drops, torque spikes, and the cost of each steep section compounds over the remaining climb.

The cleanest strategy is simple: ride conservatively through the opening kilometres, keep cadence comfortable wherever the gradient allows, and reserve enough muscular capacity for the steepest pitches. Irshad Pass is not a climb to force early. Its length, altitude, and extreme maximum gradient make it a climb where control matters more than aggression.