Gotthard Pass

Overview

Gotthard Pass is an HC climb in Switzerland, the top category on the road-cycling scale and the label reserved for ascents that sit beyond ordinary classification. It runs 10.5 km from a start elevation of 1,144 m to a summit of 2,109 m, for a net elevation gain of 965 m. That places it firmly among the sustained high-mountain efforts: long enough to demand pacing, high enough to put you in thinner air by the top.

The number to watch, though, is the gap between net gain and total ascent. You climb 965 m in net terms, but the road makes you gain 1,350 m of total ascent along the way. The difference of 385 m is undulation — sections where the road dips or flattens before climbing again. Those 385 m of "extra" vertical are work you do without being rewarded by net height, so the true effort here is meaningfully harder than a 965 m net figure suggests.

How the Gradient Unfolds

The 9.17% average is already stiff, but averages flatten the story. Because 385 m of the 1,350 m total ascent is undulation, the climbing gradient on the pitches that actually go up is steeper than 9.17% — the average is diluted by the flatter and descending sections in between. Expect the road to hit sharp ramps well beyond the mean, with a peak pitch of 28.05%.

• Flatter and recovery sections where the road eases or briefly drops, accounting for the undulation
• Repeated short climbs that stack back up after each dip, so the effort keeps resetting
• A steepest ramp reaching 28.05%, the pitch that dictates your gearing choice

Pacing Notes

On an undulating climb like this, even-effort beats even-speed. Chasing a constant pace forces you to surge on every steep ramp and coast on the flatter bits, spiking your effort and burning matches you cannot get back. Instead, hold a steady, sustainable output and let your speed rise and fall with the terrain. Anchor that output to your sustainable power output and keep the ramps just under threshold rather than blowing past it. If you do not know your ceiling, run the numbers through the FTP estimator before you commit to a pacing plan. The 385 m of undulation is exactly where even-speed pacing leaks energy, so ride the effort, not the clock.

Gearing

Gearing here is governed by the steepest pitch, not the average. A 28.05% ramp will overwhelm a standard road setup, so plan around a compact or sub-compact chainset paired with a wide-range cassette — think 34×32 or 34×34 to keep your cadence alive when the road kicks up. On a climb of this length, the ability to spin a low gear is what keeps you off your limit through the steep sections. Check your setup before the ride; discovering you are over-geared partway up a 28.05% ramp is not a fixable problem on the road.

Summary

• Length: 10.5 km
• Average gradient: 9.17%
• Maximum gradient: 28.05%
• Net elevation gain: 965 m
• Total ascent: 1,350 m
• Category: HC

Gotthard Pass is a genuine HC test: 10.5 km, a 9.17% average, and 1,350 m of total ascent to net just 965 m. Respect the undulation, ride to your effort, and gear for the steepest ramp, and the summit at 2,109 m is well within reach.