Bosluiskloof Pass

Overview

Bosluiskloof Pass is a Category 2 climb in South Africa. It runs 6.7 km from a start elevation of 514 m to a summit at 977 m, for a net elevation gain of 463 m. On paper it is a mid-length climb with a moderate average gradient, the kind of effort that rewards riders who arrive with a plan rather than a hero's opening pace.

The number that reshapes the ride is total ascent. While the net gain is 463 m, the total ascent is 716 m — a difference of 253 m spent on climbing that gets undone before the summit. That undulation means you pay for elevation you do not keep: every dip that follows a rise forces you to re-climb ground you already earned. Expect the descents to break your rhythm and the re-accelerations to cost matches you would rather save for the top.

How the Gradient Unfolds

The 6.92% average is a blend, not a constant. The maximum pitch hits 29.29%, and with 253 m of climbing lost to dips, the true climbing sections sit well above the average to compensate for the flatter and downhill ground dragging it down. Do not pace to the average — pace to the ramps.

• Flatter and recovery sections where you can drink, shift, and reset before the next rise
• Repeated short climbs that punch above 6.92% to make up for the undulation
• The steepest ramp at 29.29%, which demands your lowest gear and a deliberate, low-cadence grind

Pacing Notes

On a smooth climb, even effort and even speed roughly align. Here they do not. Because of the undulation, holding constant speed would spike your power on every rise and waste it on every dip. Pace to effort instead: hold a steady, sustainable power output on the climbing pitches and soft-pedal the descents to recover rather than chasing the clock.

Know your ceiling before you start. Run the FTP estimator and set a target you can hold through the repeated rises without cracking on the 29.29% ramp. Let your speed fluctuate; keep your effort honest.

Gearing

The 29.29% maximum gradient governs your setup. A compact (50/34) or sub-compact chainset paired with a wide-range cassette — 34×32 or 34×34 — gives you the low end to spin the steepest section instead of grinding it standing. If you are on a mid-compact or a narrow cassette, you will run out of gears exactly when the gradient bites hardest. Check your setup before the ride, not at the base of the climb.

Summary

• Length: 6.7 km
• Average gradient: 6.92%
• Maximum gradient: 29.29%
• Net elevation gain: 463 m
• Total ascent: 716 m
• Category: 2

Bosluiskloof Pass is a climb defined by its 253 m of undulation and its 29.29% pitch. Pace to effort, gear for the ramps, and treat the 716 m of total ascent — not the 463 m net gain — as the real workload.