Seweweekspoort

Overview

Seweweekspoort is a Category 4 climb in South Africa, running 7.3 km from base to summit. Over that distance it delivers a net elevation gain of 224 m, starting at 578 m and topping out at 802 m. On paper this is a modest ascent, and its low category reflects that: the numbers suggest a climb you can ride steadily without a great deal of drama.

The paper numbers, though, undersell the workload. Against a net gain of 224 m, the total ascent is 538 m — a difference of 314 m that you climb, lose, and climb again. That undulation means Seweweekspoort is not a single sustained drag but a rolling road that keeps interrupting your rhythm. Every metre of that extra ascent is effort your legs pay for, even though it never shows up in the start-to-summit figure.

How the Gradient Unfolds

The 3.06% average gradient is close to meaningless here. With more than twice the net gain in total ascent, that average is diluted by descents and flat stretches that mask where the real work happens. The steepest ramp bites at 16.92% — more than five times the average — so the climb hides genuine punch behind a soft headline number.

Across the profile, expect:

• Flatter and recovery sections where the road descends or levels off, dragging the average down
• Repeated short climbs that break your cadence and force repeated efforts
• A steepest ramp of 16.92% that will spike your power well above anything the average implies

Pacing Notes

On a climb this undulating, even-effort pacing beats even-speed pacing. Chasing a constant speed forces you to surge over every short ramp and coast the descents, spiking your power and burning matches you'll want later. Instead, anchor your effort to a sustainable power output and hold it through the rises, letting your speed rise and fall with the terrain.

Know your ceiling before you start. Run the FTP estimator so you have a real target, then keep your rolling power near it — accepting brief overshoots on the 16.92% ramp rather than trying to smooth them away.

Gearing

The 16.92% maximum gradient governs your gearing choice, not the gentle average. That pitch is steep enough to stall an underprepared drivetrain, so fit a compact or sub-compact chainset paired with a wide-range cassette — something like a 34×32 or 34×34 to give you a bailout gear for the steepest ramp. Check your setup before the ride; confirming your low gear beforehand is far easier than grinding to a halt on the climb.

Summary

• Length: 7.3 km
• Average gradient: 3.06%
• Maximum gradient: 16.92%
• Net elevation gain: 224 m
• Total ascent: 538 m
• Category: 4

Seweweekspoort rewards riders who read past the average. Treat it as a rolling, punchy effort rather than a steady drag, pace to your sustainable power, and carry the gearing to handle its 16.92% ramp, and the 314 m of hidden re-climbing won't catch you out.