Kupreška vrata

Overview

Kupreška vrata is a category 2 climb that rewards patience over explosiveness. From a start elevation of 632 m it climbs 11.6 km to a summit of 1140 m, a net gain of 508 m at an average gradient of 4.39%. The total ascent measured along the road is 492 m, slightly under the net figure because the climb runs almost uninterrupted uphill with little in the way of descending relief. This is a rhythm climb: long enough to demand real pacing discipline, but never so severe that it forces you out of the saddle for extended stretches.

How the Gradient Unfolds

The headline number here is that 4.39% average, and for much of the 11.6 km you will be riding close to it. The defining feature is the gap between average and maximum: the steepest pitch touches 7.58%, meaning the hardest ramp is roughly 3.19 percentage points above the average. That tells you the climb is fairly consistent rather than a series of walls. Expect long sustained sections around the average, punctuated by short steeper kicks that lift the gradient toward that 7.58% peak before easing back. With only 492 m of total ascent spread across the distance, there are no punishing false flats disguising a hidden grind, but nor is there much respite once you commit.

Pacing Notes

On a climb this length, the winning strategy is to settle into an effort you can hold from bottom to top. Aim to ride the sustained sections at or just below your threshold, then absorb the steeper 7.58% kicks with a brief, controlled surge rather than an all-out effort. Anchoring your target power to your FTP keeps you honest across all 11.6 km — going too deep early on a 508 m ascent is the classic mistake here. If you do not yet know your threshold, run the numbers through the FTP estimator and set a wattage ceiling before you start. Hold it steady, breathe through the ramps, and you will crest at 1140 m with something left.

Gearing

For a 4.39% average that spikes to 7.58%, most riders will be comfortable on a compact setup. A 34×32 lowest gear gives you enough range to spin the steeper pitches without grinding, and it keeps your cadence high across the long sustained middle of the climb. If you carry a bit more weight, ride tired, or simply prefer to twiddle up the ramps, step down to a 34×34 — that extra cog turns the 7.58% sections into a manageable seated effort rather than a strength test. Neither gear is overkill on 11.6 km of continuous climbing; the goal is to protect your legs over the full 508 m of gain.

Summary

Kupreška vrata is an honest, steady category 2 climb: 11.6 km of consistent gradient to a 1140 m summit, with just enough of a 7.58% sting to keep you focused. Pace it to your threshold, gear it for comfort, and let the rhythm carry you up.

Length: 11.6 km
Average gradient: 4.39%
Max gradient: 7.58%
Start: 632 m
Summit: 1140 m
Net gain: 508 m
Total ascent: 492 m
Category: 2