Col de Tizi Tirherouzine cycling climb profile
The Col de Tizi Tirherouzine is an 11.8 km category 1 climb in Morocco, rising from 1410 m to 2305 m. On paper, the defining number is the 7.56% average gradient. In practice, the more important warning is the 28.37% maximum gradient. That spread tells you this is not a climb to ride like a steady tempo ramp from bottom to summit.
The net elevation gain is 895 m, so the work accumulates quickly. Even if the average sits in the high single digits, the presence of such a severe maximum gradient means the climb likely asks for repeated torque management rather than just aerobic patience. The cost of over-riding early is not just a high heart rate. It is muscular fatigue that shows up later when the road kicks again.
How the gradient unfolds
With only the headline profile data available, the safest read is that the climb should be paced as uneven and potentially punishing. An 11.8 km ascent averaging 7.56% already demands sustained climbing power. Add a maximum of 28.37%, and the tactical problem changes. You are not just trying to hold a number. You are trying to preserve enough leg speed and control to survive the steepest ramps without turning the climb into a sequence of recovery deficits.
The elevation profile also matters. Starting at 1410 m and finishing at 2305 m puts the summit high enough that the final kilometres can feel more expensive than the same gradient lower down. That does not mean the climb becomes impossible, but it does mean pacing errors compound. A rider who treats the lower slopes as a test of strength may find the upper portion becomes a test of damage control.
Pacing strategy
Ride the first part below your normal climbing ceiling, especially if you are pacing by /glossary/ftp. The correct strategy is not to chase the average gradient. It is to leave a margin for the steepest sections, because the profile tells you they exist but not where they arrive.
Practical approach:
- Start controlled, closer to sustainable tempo than threshold.
- Let power rise on steep ramps, but avoid long surges that force repeated anaerobic efforts.
- Use cadence as an early warning. If cadence collapses while effort is already high, back off before the next ramp.
- Save your hardest riding for the upper half, when the elevation gain and altitude have both accumulated.
Gearing notes
This is a climb where low gearing is not a luxury. A 28.37% maximum gradient is steep enough that many riders will need their easiest gear simply to keep momentum and avoid grinding. Choose gearing for the steepest ramp, not the 7.56% average.
If you are unsure, err on the side of a wider cassette or compact setup. The goal is to keep the pedals turning when the road pitches up, not to prove you can muscle a bigger gear. On a climb of 11.8 km with 895 m of net gain, protecting cadence is usually the difference between riding the summit well and arriving there with the legs already emptied.