Col de la Loge

Overview

Col de la Loge is a Category 2 climb in France measuring 11.2 km from base to summit, rising 799 m of total ascent. The starting elevation sits at 691 m, and the road tops out at 1,251 m. An average gradient of 5.01% across that distance sounds manageable — until the 15.9% maximum gradient enters the picture. That spread between average and maximum tells you everything: this is not a steady, metronome climb. Expect irregular terrain that punishes riders who open too hard in the easier sections.

How the Gradient Unfolds

With an 11.2 km length and 799 m of climbing, the road averages just over 70 m of vertical gain per kilometre — a moderate workload in isolation. But the 15.9% peak gradient indicates at least one section that is significantly steeper than anything the average figure suggests. Treat the average as a budget, not a forecast.

What to Expect Section by Section

• Lower slopes: The base at 691 m is relatively low for a French mountain pass, which often means the early kilometres can carry residual warmth and a gentler ramp. Use this to settle into a sustainable rhythm rather than accelerating.
• Mid-climb: With over 11 km to cover, there is enough road that steeper ramps can arrive well before the summit. The 15.9% maximum is a genuine spike — the kind of gradient that forces a gear change if you arrive at it already fatigued.
• Upper slopes: The final push to 1,251 m will depend heavily on how well pacing was managed below. Any accumulated lactate debt from attacking the steeper mid-sections will compound here.

Pacing Strategy

A 5.01% average gradient on 11.2 km suits a threshold-based effort — riding at or just below your functional threshold power for the full duration is realistic if the route were uniform. It is not uniform. The practical approach:

• Target a power or heart-rate ceiling you can hold for 40–50 minutes, not just the average gradient. If you don't have a current FTP figure, use the FTP estimator before heading out.
• Protect yourself on the steeper pitches. When a 15.9% ramp arrives, resist the urge to mash through it. Shift down early, keep cadence above 70 rpm, and let power drift upward naturally rather than spiking effort unnecessarily.
• Recover on any shallower sections that fall well below the average. These are not opportunities to accelerate; they are opportunities to lower heart rate and flush legs before the next hard pitch.
• Nutrition: At 11.2 km, most riders will be on the climb for 35–55 minutes depending on ability. One gel or equivalent at the 20–25 minute mark is reasonable if you haven't eaten recently.

Gearing Notes

The 15.9% maximum gradient is the deciding factor here. On a standard road groupset with an 11-28 or 11-30 cassette, that pitch will require the smallest ring and largest sprocket, and some riders will still find themselves grinding uncomfortably. If your bike is set up for flatter terrain:

• A compact chainset (50/34) with at least a 32-tooth sprocket on the rear gives meaningful comfort on the steepest sections without sacrificing too much speed on the flatter approach.
• Consider that you still have kilometres left to ride after any 15.9% ramp. Burning matches to force a harder gear through it rarely pays off at this climb's length.

Summary

Col de la Loge is a Category 2 climb that rewards patience and punishes overconfidence. The 5.01% average is approachable; the 15.9% maximum is not. Eleven-plus kilometres of variable terrain means pacing discipline matters more than raw fitness on this road. Set a conservative ceiling early, manage the steep pitches with gear selection rather than brute force, and the summit at 1,251 m is well within reach for prepared riders.