col de la Croix (Vaud)

What the Numbers Actually Mean

The Col de la Croix sits in the Vaud canton of Switzerland, rising from 997 m at the base to a summit at 1769 m. The headline figures — 14.7 km, 5.25% average gradient, 772 m of net elevation gain — suggest a manageable Category 1 climb. Don't be misled. The total ascent of 1219 m against a net gain of 772 m tells the real story: there is significant undulation baked into the route, meaning your legs absorb considerably more vertical work than the summit-to-start arithmetic implies.

The maximum gradient of 25.04% is not a rounding error. Somewhere on this road there is a ramp steep enough to stop an underprepared rider cold.

How the Gradient Unfolds

The gap between the 5.25% average and the 25.04% maximum is enormous — over 19 percentage points. That spread signals a climb with a highly uneven character: long stretches of moderate climbing punctuated by at least one brutally steep ramp.

The practical implication is that you cannot treat this as a steady-state effort. Sections near the average gradient feel almost comfortable at threshold pace; the steep ramp demands a completely different gear and a different physiological response.

What to Expect Section by Section

• Lower slopes: Starting at 997 m, the early kilometers are likely where the road settles into rhythm. The average across the full 14.7 km is 5.25%, so expect these sections to sit somewhere in that range — rideable at a controlled tempo.
• Mid-climb undulations: The total ascent figure (1219 m) exceeding the net gain (772 m) confirms there are descents or flat recoveries woven through the route. Use them deliberately. Soft-pedal, recover breathing, and resist the temptation to attack.
• The 25% ramp: This is the defining moment of the climb. A gradient above 20% requires a near-complete gear change strategy. If you arrive at it with heavily accumulated fatigue, you will suffer disproportionately.

Pacing Notes

Because of the gradient variance, even FTP-based pacing needs adjustment. A single power target won't work here.

Recommended approach:

• Ride the moderate sections at 85–92% of FTP — enough to make progress without pre-loading fatigue into the steep ramp.
• On any recovery sections created by the mid-climb undulations, actually recover. Drop effort, spin, and let heart rate come down.
• Approach the steep ramp conservatively. Blow up on a 25% pitch with kilometers still to go and the rest of the climb becomes survival.
• If you're using a power meter and want to estimate targets, account for the total ascent figure rather than just the net gain when projecting energy expenditure.

Gearing

A 25.04% maximum gradient is at or beyond the limit of what most standard road gearing handles comfortably. Specific recommendations:

• Compact chainring (50/34 or 46/30) paired with an 11-32 or 11-34 cassette at minimum.
• Riders who favor bigger gears on moderate climbs should still carry adequate range for the steep section — there is no graceful way to grind a 53/25 up a 25% wall.
• If your bike has mid-compact or semi-compact gearing and you haven't ridden gradients above 20% recently, consider a cassette swap before the event.

Category Context

This is a Category 1 climb. That designation reflects cumulative difficulty — the combination of length, elevation gain, and gradient severity. Treat it with the same respect you'd apply to other Cat 1 ascents in the Alps. The moderate average gradient is not an invitation to go out hard; it's an invitation to go out controlled and survive the ramp.