Aphanize

What to Expect from Aphanize

Aphanize is a Category 1 climb in France that earns its rating honestly. At 9.3 km with an average gradient of 8.35%, it sits firmly in the territory where pacing errors in the first few kilometres come back to collect their debt near the top. The net elevation gain of 780 m (total ascent 1,048 m) tells you something important: the road is not a smooth ramp. There is enough vertical variation baked into that discrepancy to expect the gradient to surge and ease repeatedly rather than grind at a constant angle.

The headline number is the maximum gradient of 26.48%. That figure is not a typo. Sections at that pitch border on unrideable for anyone running a standard road double chainring, and they demand full commitment even with a compact or a 1x setup. Expect those ramps to feel short but brutal — the kind of gradient that forces you either to stand and grind or to sit and spin at near-zero speed.

How the Gradient Unfolds

With an average of 8.35% sustained across 9.3 km, Aphanize never truly relents. That average places almost every kilometre in the range that taxes your FTP continuously — not a threshold you can occasionally dip below for meaningful recovery.

The gap between the average (8.35%) and the maximum (26.48%) is more than 18 percentage points. That spread signals a climb with sharp, concentrated steep sections rather than a uniformly pitched wall. Riders should anticipate:

• Moderate ramps forming the bulk of the climb, where 8–10% is the working gradient
• Steep kicks that spike well above the average, likely concentrated in one or two sections
• Brief recoveries between those kicks that feel like relief but are still uphill at positive gradients

The road rises from 263 m at the start to a summit at 1,043 m. That context matters: the lower slopes begin at modest elevation, so heat and humidity can be a factor on warm days before altitude provides any cooling relief.

Pacing Notes

The standard guidance for a Category 1 climb of this length and gradient applies in full here: start conservatively. The temptation is to push hard on the moderate early ramps while legs are fresh. Resist it.

• Target a sustainable effort in the 85–95% FTP range for the bulk of the climb. Use a power meter or FTP estimate to anchor your effort rather than relying on perceived exertion, which this climb will distort.
• Pre-select a low gear before you hit any steep ramp. Shifting under maximum load on a 20%+ gradient risks dropping the chain or stalling your cadence catastrophically.
• On the steep kicks, prioritise cadence over pride. A slow spin at 60–65 rpm is mechanically more sustainable than grinding at 45 rpm and blowing up your legs for the remaining kilometres.
• Save a small reserve for the final kilometres. Even if the closing section is not the steepest, accumulated fatigue from 8+ km of hard climbing means the summit always feels harder than the numbers suggest.

Gearing Recommendations

Do not underestimate the 26.48% maximum gradient when choosing a cassette. For reference, a typical road compact (34-tooth inner ring) paired with a 28-tooth sprocket gives a gear ratio that many riders will find insufficient on the steepest pitches at any sustainable cadence.

• Road bike: 34/32 minimum; 34/34 or a wider-range 11-34 cassette is preferable
• Gravel or 1x setup: A 38-tooth chainring with a 10-44 or 10-46 cassette handles the spikes without sacrificing too much on recovery sections
• If you are unsure what gearing suits your output, cross-reference your FTP against the expected climb duration before committing to a wheel build or cassette swap

Aphanize rewards patience and punishes hubris. Treat the average gradient as the ceiling for your sustained effort, and treat the maximum as the reminder that this climb sets its own terms.