Bogong High Plains

Overview

Bogong High Plains is a Category 2 climb in Australia that runs for 20.9 km. It starts at 776 m and tops out at 1643 m, for a net elevation gain of 867 m. On paper that is a long, moderate ascent, and the 4.14% average gradient supports that reading. But the length alone means this is a sustained effort that demands respect for pacing rather than raw power.

The number that changes the story is total ascent. Against 867 m of net gain, the climb racks up 1386 m of total ascent — a gap of 519 m. That means you are climbing roughly 60% more than the net figure suggests, because sections of descent and false flat force you to regain height you have already given back. This undulation makes the average gradient a poor guide to how the legs will actually feel over 20.9 km.

How the Gradient Unfolds

A 4.14% average across a climb that gains 1386 m of total ascent tells you the profile is broken up, not smooth. The flatter and downhill stretches drag the average down, which means the climbing segments in between are meaningfully steeper than 4.14%. The steepest ramp reaches 21.33% — a wall you will not sustain at your climbing pace, so it has to be absorbed with a short, hard surge.

• Flatter and recovery sections that let you spin and drink, but also let the average mislead you
• Repeated short climbs where you regain the height lost across the 519 m of extra ascent
• A steepest ramp of 21.33% that demands your lowest gear and a brief power spike

Pacing Notes

On an undulating climb like this, even-effort pacing beats even-speed pacing. Chasing a constant speed forces you to spike hard on every riser and coast on every descent, burning matches you will need later. Instead, hold a steady sustainable power output and let your speed rise and fall with the terrain — fast on the flats, slower on the ramps.

If you do not know your ceiling, run the numbers through the FTP estimator first. Over 20.9 km, riding a few percent above threshold on the early pitches quietly compounds into a blow-up near the top.

Gearing

The 21.33% maximum pitch governs your gearing choice, not the 4.14% average. Even strong riders need a low bailout gear to keep the cranks turning through that wall. Fit a compact or sub-compact chainset paired with a wide-range cassette — something like 34×32 or 34×34 — so you always have a gear left when the road kicks up. Check your setup before the ride; discovering you are over-geared halfway up a 21% ramp is not the place to find out.

Summary

• Length: 20.9 km
• Average gradient: 4.14%
• Maximum gradient: 21.33%
• Net elevation gain: 867 m
• Total ascent: 1386 m
• Category: 2

Bogong High Plains is a long Category 2 climb whose undulation, not its steepness, defines the challenge. Pace it by effort, gear it for the 21.33% ramp, and treat the 1386 m of total ascent — not the 867 m net — as the true measure of the day.