Willamette Pass cycling climb profile
Willamette Pass is a category 2 climb built more around duration than brutality. At 25.4 km, it asks for patience. The average gradient is 3.44%, the maximum gradient is 6.13%, and the climb rises from 685 m to 1560 m. That combination tells you the main tactical story before you even start riding it: this is not a climb defined by a decisive wall, but by the cost of holding pressure for a long time.
The net elevation gain is 875 m, while the total ascent is 878 m. That tiny difference matters. It suggests a very direct climbing profile, with almost all of the vertical work contributing to the summit rather than being interrupted by meaningful dips or recovery sections. You should not expect the road to hand back much free speed once the climbing begins.
How the gradient unfolds
With an average of 3.44% across 25.4 km and a max of 6.13%, Willamette Pass sits in the steady endurance-climb category. The gradient is low enough that speed, aerodynamics, and rolling efficiency still matter, but long enough that treating it like a false-flat cruise is a mistake.
The important point is the relationship between the average and the maximum. A climb with this length and a max gradient just over 6% is unlikely to force repeated out-of-saddle survival efforts. Instead, the challenge is the accumulation of load. The road can feel manageable early because the slope is never extreme, but that is exactly where riders often overpay. A few watts too many at the bottom become a pacing problem near the top because there is still a lot of climbing left.
Pacing and gearing notes
Ride Willamette Pass like a long tempo ascent, not a short test. The cleanest approach is to settle into a sustainable effort early and avoid chasing small changes in speed as the grade varies. If you use power, anchor the ride around what you can hold without drifting above your sustainable climbing effort. For reference, see /glossary/ftp if you pace by threshold.
Gearing should prioritize cadence control. The maximum gradient of 6.13% means you do not need emergency mountain gearing for sustained double-digit ramps, but the length means you do need a setup that lets you stay smooth when fatigue builds. If your easiest gear only feels comfortable at the bottom, it will feel too big late in the climb.
The best execution is boring in the right way: stay seated where possible, keep pressure consistent, and save any harder riding for the final portion once the summit elevation of 1560 m is genuinely within reach. On this profile, restraint is not conservative. It is the fastest way to turn a long, moderate climb into a controlled effort rather than a slow fade.