Warner Pass

Warner Pass cycling climb profile

Warner Pass is a category 1 climb in Canada that earns its rating through simple, sustained difficulty: 10 km of climbing at an average gradient of 8.34%, rising from 1564 m to 2398 m. On paper, that is already a hard effort. In practice, the defining detail is the gap between the average gradient and the maximum gradient of 17.72%.

That spread matters. An 8.34% average over 10 km means there is very little room to hide. The road has to keep pressing for a long time to produce 834 m of net elevation gain. But the 17.72% maximum tells you the climb is not just a steady metronome. Somewhere inside the ascent, the gradient more than doubles the average, and that changes how you should ride it.

How the gradient unfolds

The available profile does not give a kilometer-by-kilometer breakdown, so the most useful way to read Warner Pass is by its constraints. A 10 km climb averaging 8.34% is already steep enough that small surges cost more than they feel in the moment. Add ramps up to 17.72%, and the climb becomes a pacing test rather than just a power test.

The danger is treating the average gradient as the whole story. If you ride the opening kilometers as if the climb will sit neatly at 8.34%, the steeper pitches can force you above sustainable effort, spike breathing, and push you into a gear that is too large to recover from smoothly. The better assumption is that the climb will feel controlled only if the early effort is held slightly in reserve.

Because the summit sits at 2398 m, the final part of the climb also comes after a meaningful vertical gain from the start. That does not change the gradient, but it does change the cost of poor pacing. Fatigue accumulated on the lower slopes will be paid back near the top.

Pacing and gearing notes

Treat Warner Pass as a threshold-management climb. If you know your /glossary/ftp, the opening should feel disciplined rather than ambitious. The goal is to arrive at the steepest ramps with enough margin to absorb them without turning the climb into repeated anaerobic efforts.

Practical approach:

• Start below the effort you think the average gradient deserves.
• Keep the gear light enough that a sudden ramp toward 17.72% does not force a standing grind.
• Avoid chasing speed on any easier sections, since the climb is long enough for those matches to matter later.
• Use the steepest pitches as controlled pressure, not attacks against the gradient.

For gearing, the headline is straightforward: bring a true climbing setup. A 10 km climb at 8.34% with ramps to 17.72% punishes overgearing. The right gear is the one that lets you keep torque manageable when the road tilts sharply, especially after several kilometers of sustained climbing.

Warner Pass is not complicated on paper, which is exactly why it can be hard to ride well. The average gradient demands respect, the maximum gradient demands preparation, and the full 834 m of net gain rewards the rider who keeps the effort boring early so it can stay effective late.