Barlow Pass cycling climb profile
Barlow Pass is a category 3 climb in the US that is more about sustained control than surviving steep gradients. The headline numbers tell the story clearly: 10.7 km at an average gradient of 3.22%, rising from 375 m to 719 m.
That combination makes it a climb where speed can stay relatively high, but the duration still matters. Riders who treat it like a short roller will usually pay for that choice later, because 10.7 km is long enough for small pacing errors to compound.
How the gradient rides
The average gradient of 3.22% points to a climb that should feel steady and aerobic rather than violent. The maximum gradient is 6.75%, so there is enough bite to force a gear change or briefly lift the power, but nothing in the supplied profile suggests a wall or a sustained double digit test.
The practical reading is that Barlow Pass likely rewards momentum. On a climb this moderate, the limiter is less about producing one large surge and more about avoiding repeated accelerations above target effort. If the road pitches toward the listed maximum, it is better to let cadence soften slightly or shift early than to punch over every rise.
The elevation change is meaningful without being extreme. The pass gains from 375 m to 719 m, with a listed net elevation gain of 344 m. That makes the climb long enough to settle into a rhythm, but not so steep that pure climbing weight becomes the only variable. Aerobic efficiency, position, and keeping pressure on the pedals all matter.
Pacing notes
For most riders, Barlow Pass is best ridden just below threshold if the goal is a hard, clean effort. If it sits inside a longer ride, it is a classic tempo climb: firm pressure, controlled breathing, and no unnecessary spikes. Think in terms of power discipline rather than gradient survival.
Use the first part of the climb to establish a sustainable rhythm. The mistake is going too hard because 3.22% feels manageable early. On a climb over 10 km, that early comfort can encourage speed chasing, especially if the road gives the impression that it is not really climbing. Hold back until the effort has fully stabilized, then build if the legs are still responding.
For pacing by power, anchor the effort to your known FTP. For pacing by feel, the right intensity is one where conversation is limited but the effort still feels repeatable.
Gearing notes
A compact or endurance oriented setup is enough for most riders, but do not overgear the 6.75% maximum. The goal is to keep cadence smooth when the slope sharpens, not to grind through the steepest pitches and lose rhythm.
Because the average is moderate, aerodynamic position and steady torque both matter. Stay seated for most of the climb, shift before the steeper moments, and avoid turning the ascent into a sequence of surges. Barlow Pass is not won by one attack against the gradient. It is ridden well by holding an even effort from bottom to summit.