Griswold Pass

Griswold Pass cycling climb profile

Griswold Pass is a category 2 climb in Canada that asks for discipline more than drama. On paper, the numbers are controlled: 7.9 km at an average gradient of 5.68 percent, starting at 1119 m and topping out at 1565 m. That makes it long enough to punish over-pacing, but not so steep that the climb becomes a pure survival effort from the first pedal stroke.

The important detail is the spread between the average gradient and the maximum gradient. A 5.68 percent average suggests a climb where momentum can be carried if the effort is kept smooth. But a maximum gradient of 9.48 percent means the hardest sections are materially steeper than the headline figure. The mistake is to gear and pace for the average, then get forced above threshold when the road lifts.

How the gradient rides

From bottom to summit, the climb gains height steadily from 1119 m to 1565 m. The listed net elevation gain is 446 m, while the route data also lists 422 m of total ascent, so the cleanest practical read is the full-climb profile: a sustained ascent just under 8 km with a moderate average and sharper pitches approaching double digits.

That combination usually rides best as a controlled aerobic-to-threshold climb rather than a repeated acceleration climb. The average gradient gives room to stay seated and keep cadence consistent, but the 9.48 percent maximum is enough to expose riders who start too aggressively. If you are chasing a time, the fastest approach is not to attack the lower slopes. It is to preserve enough headroom that the steepest pitches do not force a big spike above /glossary/ftp.

Pacing notes

Treat the first part of Griswold Pass as a governor on the rest of the climb. The full length is 7.9 km, which is long enough that early enthusiasm can cost more than it gains. Settle into a sustainable rhythm, let speed fluctuate with the gradient, and avoid trying to keep the same pace when the road tilts toward the maximum grade.

A sensible pacing plan is:

• Start slightly under your target effort until breathing and cadence stabilize
• Hold a firm, seated tempo through the main body of the climb
• Let power rise briefly on steeper ramps, but avoid turning those moments into attacks
• Save the highest effort for the final push once the summit is close enough to commit

Gearing notes

Do not gear Griswold Pass only for 5.68 percent. That average can make the climb look easier than it will feel when the road reaches 9.48 percent. A climbing-friendly low gear is the safer choice, especially if the climb comes after fatigue or sits inside a longer ride.

The right setup is one that lets you stay seated and maintain cadence on the steepest pitches without grinding. If your easiest gear is already marginal on climbs near this gradient range, Griswold Pass will force low-cadence work when the slope kicks up. That is manageable once or twice, but over 7.9 km it becomes an expensive way to spend energy.

The climb rewards patience. Ride the average, respect the maximum, and arrive at the upper slopes with enough control to lift the effort rather than merely defend it.