Buffalo Nek

Overview

Buffalo Nek is a Category 3 climb in South Africa, running 10 km from base to summit. It gains 372 m net over that distance, starting at 1,281 m and topping out at 1,653 m. On paper it reads as a moderate ascent: enough length to matter, but a category and net gain that keep it short of the sport's hardest tiers.

The number that reshapes the picture is total ascent. While the net gain is 372 m, the climb accumulates 618 m of total ascent along the way. That 246 m gap is undulation — sections that fall away and force you to climb back. You will do meaningfully more work than the net figure suggests, and the descents in between rarely give back what they cost.

How the Gradient Unfolds

The average gradient of 3.74% is close to meaningless here. Averaging a 372 m net gain across 10 km flattens out both the rolling dips and the sharp ramps, so the number describes a road that barely exists on this profile. The real effort lives in the steepest pitch, which touches 15.48%.

• Flatter and recovery sections where the road dips or eases, dragging the average down
• Repeated short climbs stacked back to back, which is where the extra 246 m of ascent accumulates
• The steepest ramp at 15.48%, far above the average and the pitch that will define your gearing

Pacing Notes

Do not pace this climb to even speed. On an undulating profile the terrain constantly changes what a given pace costs, so chasing a steady km split will spike your effort on every ramp and waste it on every dip. Pace to even effort instead, holding your sustainable power output through the steep pitches and letting speed rise naturally where the road eases.

Know that ceiling before you start. Use the FTP estimator to set a target you can hold through the repeated climbs, and treat the 15.48% ramp as a place to hold power, not to attack.

Gearing

The steepest gradient governs your gearing, and at 15.48% you want low ratios in reserve. A compact or sub-compact chainset paired with a wide-range cassette — 34×32 or 34×34 — gives you a bailout gear that keeps your cadence up on the steep ramp instead of grinding. The undulation makes this doubly important: you hit the hard pitches with tired legs, not fresh ones. Check your setup before the ride so you are not caught in the wrong gear on the wall.

Summary

• Length: 10 km
• Average gradient: 3.74%
• Maximum gradient: 15.48%
• Net elevation gain: 372 m
• Total ascent: 618 m
• Category: 3

Buffalo Nek rewards riders who read the profile rather than the average. Pace to effort, gear for the 15.48% ramp, and respect the 246 m of extra climbing hidden in the undulation, and this Category 3 will ride the way its stats promise.