Col de Ma Kan cycling climb profile
Col de Ma Kan is a long Category 1 climb in VN, and the headline number is the one that should shape your entire ride: 29.1 km at an average gradient of 5.18%. That combination usually punishes impatience more than raw steepness. The climb gains 1508 m from a start elevation of 509 m to a summit elevation of 2017 m, with 1599 m of total ascent, so the work is not just a single clean ramp to the top. There is enough accumulated climbing to make pacing discipline the decisive factor.
How the gradient rides
The average gradient of 5.18% makes Col de Ma Kan look manageable on paper, but the maximum gradient of 12.4% changes the way it should be ridden. A climb of this length at a moderate average invites riders to settle into tempo, but the steepest sections are sharp enough to force real torque if you arrive over-geared or already riding too close to your limit.
The key point is that the average gradient is doing a lot of smoothing. A 29.1 km climb with a 12.4% maximum is unlikely to feel uniform from bottom to summit. Even without a detailed kilometer-by-kilometer profile, the gap between the average and the maximum tells you the practical story: most of the climb can be ridden rhythmically, but there are harder ramps where staying seated and controlled may matter more than chasing speed.
The total ascent of 1599 m being higher than the net elevation gain of 1508 m also matters. It suggests the climb includes some variation rather than a perfectly uninterrupted gain. That can be useful if you use the easier moments to reset cadence and breathing, but it can also be costly if you repeatedly surge out of slower sections.
Pacing strategy
Treat the lower slopes as an investment in the upper climb. On a 29.1 km ascent, even small early efforts above sustainable power compound quickly. The right target is steady aerobic pressure, not proving freshness in the opening phase.
If pacing by power, anchor the effort below the level you would use for a shorter climb and keep any response to steep ramps brief. The 12.4% maximum gradient is where riders can burn matches without realizing it, especially if cadence drops and every pedal stroke becomes a strength effort. For riders using /glossary/ftp as a pacing reference, this is a climb where durability matters as much as the number itself.
Gearing notes
Use gearing that gives you a bailout option for the 12.4% sections, not just gearing that feels comfortable at 5.18%. That distinction is important. The average gradient tells you the climb is rideable for a long time, but the maximum gradient tells you whether you can keep the effort aerobic when the road pitches up.
A compact climbing setup or wide-range cassette is the safer choice for most riders. The goal is to protect cadence, especially late in the climb when the cumulative 1508 m of net gain starts to show. If you are grinding early, you are likely spending muscle tension you will want back near the summit.
Col de Ma Kan is not defined by one brutal statistic. It is defined by the relationship between length, sustained vertical gain, and enough steepness to punish poor pacing. Ride it patiently, keep the gear light before you need it, and let the climb come back to you rather than trying to force it from the bottom.