Ichinokoshi

Ichinokoshi cycling climb profile

Ichinokoshi is not a climb to measure by length alone. At 15.9 km, it is long enough to demand real endurance, but the defining number is the 13.19% average gradient. That puts the climb in a very different tactical category from a steady alpine pass. This is not about settling into a comfortable rhythm and waiting for the summit. It is about controlling torque, protecting the legs from repeated muscular overload, and accepting that the climb will keep asking for more than a normal climbing effort.

The road starts at 467 m and finishes at 2569 m, with 2102 m of net elevation gain. Total ascent is 2121 m, which tells the story clearly: almost all of the work is vertical. There is little in the profile, at least from the available data, to suggest meaningful downhill reset points. If the gradient eases anywhere, the arithmetic of the climb means the road has to make that back elsewhere.

How the gradient unfolds

The headline average already implies a hard lower-to-upper rhythm. Over 15.9 km, a 13.19% average leaves very little room for sustained recovery. The climb gains elevation relentlessly from bottom to summit, and the maximum gradient of 35.78% changes how it should be ridden. Even if that steepest pitch is short, it forces a different approach because the limiting factor becomes traction, gearing, and low-cadence force production rather than aerobic output alone.

This is why Ichinokoshi earns its HC category. The difficulty is not only the total gain. It is the combination of distance, sustained steepness, and extreme ramps. A rider who treats the average as a target pace will likely pay for it once the road kicks above threshold effort. On a climb this steep, small pacing errors become expensive because there is no easy way to recover while still moving efficiently uphill.

Pacing and gearing notes

Ride Ichinokoshi from the bottom as if the steepest ramps are still ahead, because the profile gives you no reason to assume otherwise. The correct effort is controlled early, even if that feels conservative. Keep the first part below the intensity you would normally use for a climb of this length, then let the climb come back to you once you know how the gradient is loading the legs.

Gearing matters more here than pride. With an average of 13.19% and a maximum of 35.78%, a low climbing gear is not optional for most riders. The goal is to keep enough cadence available that the steep sections do not force repeated standing surges. Those surges may feel necessary in the moment, but they burn matches quickly and make the final elevation gain harder than it needs to be.

A practical strategy is simple:

• Start below your normal climbing rhythm and avoid chasing speed early.
• Use the easiest gear before the road forces you into it.
• Stay seated where traction and cadence allow, then stand only to clear the steepest pitches.
• Think in terms of sustainable pressure, not speed, because gradient will dictate speed for you.

For pacing, anchor the effort to a realistic climbing power rather than the emotional pull of the slope. If you use /glossary/ftp, this is the kind of climb where riding too close to threshold too early can become a pacing trap. Ichinokoshi rewards patience, low gearing, and disciplined force control from the first meters to the summit.