McGillivray Pass

McGillivray Pass cycling climb profile

McGillivray Pass is a serious climbing effort by any useful cycling measure. The headline number is 21.9 km at 7.28%, but the more important detail is the shape implied by that combination: this is not a short wall or a punchy rise where you can bluff your way over the top. It gains 1594 m from a start elevation of 271 m to a summit elevation of 1865 m, which makes it an HC climb because the difficulty comes from sustained load as much as steepness.

The average gradient is already high enough to keep most riders under constant pressure. On a climb this long, 7.28% does not feel like a neutral climbing grade. It steadily pulls torque out of the legs, raises cooling demand, and makes small pacing errors compound. The max gradient of 16.62% is the warning label: somewhere on the climb, the road gets steep enough that cadence management and gearing become decisive rather than optional.

How the gradient unfolds

The available profile data does not break McGillivray Pass into detailed sectors, so the honest read is not to invent a false kilometer-by-kilometer narrative. What the numbers do say is clear: from bottom to summit, the climb must deliver a large net gain across 21.9 km, with an overall slope that never gives the rider much margin.

That matters tactically. A 7.28% average over this distance means any flatter ground, if it exists, has to be paid for by steeper sections elsewhere. The 16.62% maximum confirms that the climb is not simply a smooth diesel effort from start to finish. Even if most of the ascent sits near the average, the steepest ramps will punish riders who have already ridden too close to their limit.

The practical takeaway is to treat McGillivray Pass as a long threshold-controlled climb with anaerobic interruptions, not as a climb to attack from the base. The steepest pitches should be absorbed, not conquered.

Pacing and gearing notes

Start below the effort you think the average gradient demands. On a climb with 1594 m of net gain, the cost of going too hard early is not just a bad few minutes - it is a loss of usable cadence and muscular control later on. Use perceived effort alongside power if you ride with a meter, and keep the early effort anchored below your sustainable climbing ceiling. If you need a reference point, think in relation to /glossary/ftp rather than short-climb power.

Gearing should be chosen for the 16.62% maximum, not the 7.28% average. That is the key mistake this climb can invite. A setup that feels comfortable on steady mid-gradient roads may become too tall once the road pitches up, forcing low-cadence grinding when fatigue is already accumulating.

A sensible approach:

• Keep the first part controlled, even if the gradient feels manageable.
• Protect cadence before the steepest ramps arrive.
• Avoid repeated surges above sustainable power unless responding to a specific race situation.
• Fuel and drink as if the climb will take longer than the average gradient suggests.

McGillivray Pass rewards patience. The rider who stays aerobic, keeps the gear light enough for the steepest section, and lets the climb come back to them will usually be moving better near the summit than the rider who treats the opening kilometers like a test of intent.