Sella del Monte Carso

Overview

Sella del Monte Carso is a 7.9 km category 2 climb that starts almost at sea level, with the road pinned at just 6 m before it begins to lift. From there it works up to a 436 m summit, delivering 430 m of net elevation gain across its length. The average gradient of 5.46% reads as steady on paper, but the presence of a 16.32% maximum tells you the profile is not uniform — this is a climb with quiet stretches and sharp teeth. Because it launches from the coast rather than a valley plateau, almost the entire ascent is genuine vertical work: the total ascent of 418 m confirms there is very little false-flat or descending relief to break the effort.

How the Gradient Unfolds

Think of this climb in terms of its two defining numbers: an average of 5.46% and a peak of 16.32%. That gap of nearly eleven percentage points is where the character lives. A 5.46% average over 7.9 km would, if held perfectly evenly, feel like a rhythmic tempo climb. But with ramps reaching 16.32%, the reality is a punchy climb — long moderate sections that let you settle, interrupted by pitches that spike well into double digits and force a sudden change of pace. The net gain of 430 m against a total ascent of 418 m shows the road climbs almost continuously; you rarely get to freewheel and recover. Expect to spend most of your time near the 5.46% average, then brace for the steep kicks that pull the maximum up toward 16.32%.

Pacing Notes

Pace this one off your sustainable power. Because the climb averages 5.46% but spikes to 16.32%, the trap is burning matches on the steep ramps and blowing your ceiling before the 436 m summit. Anchor your effort to your FTP and hold the moderate sections a touch below threshold so you have headroom for the 16.32% pitches. If you don't know your number, run the FTP estimator before you ride so your target watts match the 7.9 km distance. On the steep kicks, let cadence drop briefly rather than surging power — a short 16.32% ramp is over quickly, and over-cooking it costs you far more than it saves across the full 7.9 km.

Gearing

For a 7.9 km climb averaging 5.46% with ramps to 16.32%, gear for the steepest sections, not the average. A compact chainring paired with a wide cassette gives you the range to spin the flatter tempo and survive the spikes. A 34×32 will handle most of this climb comfortably, but on the 16.32% pitches many riders will want more relief — a 34×34 keeps your cadence up and your knees happy when the road bites hardest. If you tend to grind, choose the 34×34 without hesitation; the 430 m of climbing rewards a lighter gear you can turn over.

Summary

Sella del Monte Carso is a coastal category 2 climb that trades on contrast: a manageable 5.46% average wrapped around 16.32% ramps, all the way from 6 m to 436 m. Pace off your FTP, gear low, and respect the steep kicks.

Length: 7.9 km
Average gradient: 5.46%
Max gradient: 16.32%
Start: 6 m
Summit: 436 m
Net gain: 430 m
Total ascent: 418 m
Category: 2