Tartano Pass

Tartano Pass cycling climb profile

Tartano Pass is not a climb you solve with one hard acceleration. At 36.6km long, rising from 236m to 2317m, it is an HC ascent defined by accumulation. The average gradient of 5.69% looks manageable on paper, but that number is doing a lot of smoothing. The climb gains 2081m net, while the total ascent is 2225m, which tells you the road is not a perfectly uniform ramp from bottom to summit.

That matters because a climb of this length punishes impatience twice. First, any early riding above sustainable climbing intensity creates a debt that has a long time to compound. Second, the maximum gradient of 15.72% means there are sections steep enough to force torque and cadence decisions, even if the overall average sits below the level most riders would call brutally steep.

How the gradient rides

The key feature is the contrast between the average and the maximum. A 5.69% average over 36.6km means the baseline demand is persistent rather than explosive. You are climbing for a long time, gaining more than two vertical kilometres from start to summit, so the main challenge is aerobic durability.

But the 15.72% maximum changes the tactical picture. Those steep pitches are where riders who have treated the early kilometres like tempo training can suddenly run out of gear or be forced into low-cadence grinding. The total ascent figure also suggests the profile contains enough variation that you should expect changes in rhythm rather than a metronomic gradient.

The practical read is simple: do not pace Tartano Pass by the average gradient alone. The average tells you the total load. The maximum tells you what your gearing and fatigue resistance must survive.

Pacing and gearing notes

Start below the effort you think the climb deserves. On a 36.6km HC ascent, the cost of being slightly conservative early is small compared with the cost of going too deep before the steepest ramps arrive. Ride by pressure, breathing, and power if you use it, keeping the first part controlled relative to your /glossary/ftp.

Gearing should be chosen for the 15.72% maximum, not the 5.69% average. A setup that feels comfortable on moderate gradients can become restrictive when the road pitches up late in a long climb. Prioritise a low gear that lets you keep turning the pedals without forcing every steep section into a strength effort.

The final pacing principle is to respect the elevation gain. With 2081m of net gain and 2225m of total ascent, this is a full endurance-climbing effort. Keep fuel and cadence steady, avoid chasing every change in slope, and save the harder riding for the point where the summit is genuinely close rather than merely visible in the numbers.