Col de Selma cycling climb profile
The Col de Selma cycling climb is a long, measured effort rather than a short test of punch. The numbers make that clear: 17.7 km at an average gradient of 4.95%, starting at 52 m and topping out at 928 m. That gives 876 m of net elevation gain, with 929 m of total ascent across the full climb.
That last detail matters. Total ascent is higher than net gain, which means the climb is not a perfectly uniform ramp from bottom to summit. There is about 53 m of elevation that gets given back somewhere in the profile, so the road likely includes easing sections, small dips, or uneven gradient changes. On paper, 4.95% can look manageable. In practice, a climb with nearly 18 km of distance and a maximum gradient of 10.31% asks for discipline because the harder ramps will arrive on top of accumulated fatigue.
How the gradient rides
The defining feature is the contrast between the average and the maximum. A sub-5% average suggests much of the climb can be ridden seated and aerobic, but the 10.31% maximum means there are sections where torque demand rises sharply. Those ramps are where riders who have paced the average instead of the climb will start paying for it.
Because the profile includes more total ascent than net gain, do not assume a steady metronomic rhythm all the way up. The effort is better treated as a long climb with interruptions: sections where the road eases, sections where speed comes back, and steeper pitches where cadence can collapse if gearing is too ambitious.
That shape changes the tactics. The easier parts are not invitations to surge. They are chances to reset breathing, bring cadence back under control, and prepare for the next rise. On a climb this long, repeatedly pushing above threshold on every steeper section will cost more than it gains.
Pacing and gearing notes
Ride the Col de Selma from the bottom as a category 1 climb, not as a moderate hill. The average gradient is friendly enough to tempt a strong opening, but the length and 876 m of net gain reward patience.
Practical approach:
- Start below your sustainable climbing effort for the first part of the ascent.
- Use the easier or flatter-feeling sections to recover, not to chase speed.
- Keep enough gear in reserve for the 10.31% maximum gradient.
- Avoid grinding early, because steep ramps late in a 17.7 km climb are much harder to absorb.
- If pacing by power, anchor the ride around a controlled /glossary/ftp-based effort and let the steepest pitches rise only briefly above that.
For gearing, the key is range rather than bravado. A setup that feels comfortable at 5% may not be enough when the road touches double digits, especially after a long accumulation of climbing. Choose a low gear that lets you keep cadence alive on the steepest ramps, then use the moderate sections to settle back into rhythm.
The Col de Selma is not defined by one extreme statistic. It is defined by the way those statistics interact: long distance, meaningful elevation gain, a moderate average, and short sections steep enough to punish impatience.