Marmot Pass cycling climb profile
Marmot Pass is a category 1 climb in the US that asks for controlled climbing rather than a short, explosive effort. The climb is 11 km long, averages 6.33%, and rises from 646 m to 1342 m. On paper, that makes it a sustained aerobic ascent: long enough that poor pacing early will still be punished near the summit, but not so steep overall that the entire climb has to be ridden defensively.
The key number is the spread between the 6.33% average gradient and the 15.51% maximum gradient. That tells you this is not simply a metronomic drag at one fixed pitch. The average is manageable for a fit endurance rider, but the maximum gradient is steep enough to break rhythm, force a seated grind, or make you stand briefly to keep the bike moving. The climb’s difficulty is therefore less about the headline average and more about how well you absorb the steeper ramps without turning them into repeated anaerobic efforts.
How the gradient should be read
With 11 km of road and 696 m of net elevation gain, Marmot Pass has the profile of a climb that rewards patience. Without a supplied kilometre-by-kilometre breakdown, the correct tactical assumption is simple: treat the whole climb as steady until proven otherwise, but keep enough margin for the 15.51% sections.
That matters because a 6.33% average can tempt riders into starting too close to their limit. The problem is that any pitch approaching the maximum gradient will then cost more than it should. If you arrive at those ramps already overextended, the climb turns from a controlled threshold effort into a sequence of recoveries you do not really get.
Pacing and gearing notes
Start the climb slightly restrained, especially if using /glossary/ftp as your pacing anchor. The first objective is not to set the fastest early split. It is to keep the steepest gradients from forcing a large power spike. On a climb of this length, smoothness is speed.
Gearing should be chosen for the maximum gradient, not the average. A setup that feels comfortable at 6.33% may still be too tall when the road kicks toward 15.51%. Prioritise a low climbing gear that lets you keep pressure on the pedals without grinding. If cadence collapses on the steepest ramps, the climb becomes unnecessarily muscular and harder to recover from.
The best way to ride Marmot Pass is to settle into a sustainable rhythm, stay seated where possible, and save standing efforts for the steepest pitches. The summit comes after enough vertical gain that efficiency matters more than aggression.