Col de Ho Tao

Col de Ho Tao cycling climb profile

Col de Ho Tao is a category 1 climb in VN that asks for controlled climbing more than aggression. The headline numbers set the tone: 15.3 km at an average gradient of 6.66%, rising from 288 m to 1307 m. That gives it 1019 m of net elevation gain, with 1028 m of total ascent, which points to a climb that keeps trending upward with very little free recovery built into the profile.

That matters tactically. On a climb of this length, the average gradient is already heavy enough to make pacing errors expensive, and the maximum gradient of 14.11% means there are sections where the climb can force you well above your preferred rhythm if the gearing is not right. The danger is not just the steepest pitch itself. It is what happens after it, when you have to return to sustainable power while already carrying the cost of the surge.

How the gradient rides

With only the headline profile available, the safest way to read Col de Ho Tao is as a sustained aerobic climb with sharper interruptions. The average of 6.66% over 15.3 km is steep enough that you should expect constant pressure on the pedals rather than long rolling sections. The small difference between total ascent and net elevation gain reinforces that reading: this is not a climb with meaningful descending or soft recovery hidden inside it.

The 14.11% maximum gradient changes the pacing problem. Even if most of the climb sits closer to the average, the steepest ramps will raise torque demand and can break cadence. That is where riders who start too hard tend to pay twice: first by overextending on the ramp, then by losing efficiency once the road settles back.

Pacing and gearing notes

Treat the lower slopes as a filter, not an invitation. Settle below threshold early, especially if riding by /glossary/ftp, and let the length do the work. A category 1 climb with over 1000 m of net gain rewards restraint because the decisive damage is usually cumulative.

Gearing should be chosen for the 14.11% maximum gradient, not the 6.66% average. If your easiest gear only feels comfortable on steady mid-grade climbing, it may leave you grinding when the road kicks up. A compact or climbing-focused setup makes sense here, particularly for riders who prefer to keep cadence stable rather than muscle through steep sections.

The cleanest strategy is simple: ride the bulk of the climb at a repeatable aerobic output, protect your cadence on the steepest ramps, and avoid chasing short bursts of speed. Col de Ho Tao is long enough and consistently uphill enough that disciplined pacing will usually beat a stronger rider who turns the early climb into a series of unnecessary accelerations.