Puig de sa Coma Fosca from Gènova

The road to Puig de sa Coma Fosca goes up and stops: there is no way onward, so it is ridden up and back down the same way. The way there is the Ma-1044 / Carrer de Miquel Lladó. From Gènova it is 5.3 km and 340 m, an average of 6.4%, finishing at 393 m.

No kilometre measured on Mallorca is steeper than this climb's worst: 15.6%. It saves the worst for last: the steepest kilometre starts at km 4.3 with 190 m already behind you. 40% of it is at 8% or steeper. The nearest town on this island you can actually book a bed in is Palma — 4.3 km of road to the foot of the climb.

Build a week around this climb →

Gènova is not the foot of the climb: 2.0 km of road separates the village from the lowest point, and that distance is not in any figure on this page. The climb is measured from where the road stops going down — which on this one means you will have ridden 2.0 km before the numbers below start.

The shape of it

Length

5.3 km

from 53 m at the foot to 393 m at the top

Height gained

340 m

summit minus the lowest point on the road — not a running total of every rise

Average gradient

6.4%

height gained over length

Steepest kilometre

15.6%

from km 4.3

Kilometre by kilometre

The worst whole kilometre below runs from km 4.0, at 12.5%. No kilometre of it goes backwards — you climb 362 m and keep it.

The bends, counted

Counted from the road centreline rather than from memory: 1 hairpin on this side, where a hairpin is a turn of at least 135° taken inside 150 m of road. The one is at km 4.3. Drop the distance condition and count every turn of 135° however long it takes, and the figure is 2 — which is why published hairpin counts disagree with each other.

That puts this road 72th of the 116 climb-sides with a bend count, at 0.2 hairpins per kilometre. The twistiest roads on Mallorca has the whole ranking, the rule the count uses, and four published counts checked against the road they were counted on.

Where it stands

Its steepest kilometre averages 15.6% against an island median of 7.1%, so it is steeper than the middle of the set. It gains more than the 192 m the median climb-side here gains, and the table puts every other measure beside the same middle.

The gear it asks for

The number that decides whether you ride up a climb or walk it is not its average. It is the steepest sustained kilometre, which here is 15.6% — so that is what this calculator is wired to. It opens on this climb; change the chainring, the cassette and your weight and it will tell you what cadence that gear actually turns.

The air at the top, and what the way down feels like

You finish this climb 340 m above where you started it, and the air knows. In January — the coldest month at this top — the foot of the climb averages 14.0 °C around 12:00 while the top averages 11.2 °C. That is an arm-warmer's worth: 2.8 °C bought with 340 m of climbing. In July the same top sits at 28.0 °C.

Then you turn round. Going down at 30–50 km/h you make your own wind, and at 08:00 in January the air at this top — 6.5 °C standing still — feels like 2.0 °C at the slower speed and 0.7 °C at the faster one. By 12:00 the air at this top has climbed back above the range the index is published for, in every month of the year: the cold descent from here is an early one, not a high one. Whatever you would wear on the way up, the way down is the reason the gilet is in the pocket.

Two thermometers 1,007 m apart define a line, not a surface, so a top on the north coast reads a figure taken across the island. Every figure here is measured under an open sky: where the mountain's own shadow lies, read the table as the warm version of the morning. What the temperatures do across the whole island, and what to put in the pocket, is on the kit guide.

What else is close

What else is up here, if this one turns out to be short of a day. Distances are straight-line between the summits, not by road — in the Tramuntana the road between two tops four kilometres apart can be fifteen.

Or go back to the whole atlas, where all 75 climb-sides can be filtered and sorted at once.

How this was measured, and how to read it

• The inventory is queried from OpenStreetMap rather than written down: every named pass on a paved road, and every named summit a paved road dead-ends at above 150 m. Each entry carries the OSM id of its top and of the village it starts from.
• Ways tagged as closed to the public — private, no, customers, permit — are removed from the road network before anything is routed, so no climb here is measured up somebody’s drive. A road shut to cars but open to bicycles is kept.
• The road is the OpenStreetMap centreline of whichever road actually crosses the pass — not a GPS trace of one ride, so no rider’s wander or lost signal is in the number.
• Elevation is sampled every 10 m from the Spanish national 5 m terrain model, and interpolated in a straight line through tunnels and over bridges, where a terrain model reads the mountain above or the valley below.
• Where a road reaches a tunnel mouth without going through it, the model has already climbed the hill the road is about to pass under, so the last metres are dropped rather than measured. One climb-side on the island is affected and its page says how far short of the portal its figures stop.
• The foot of the climb is the lowest point on that road between the summit and the named village. The distance from the village to the foot is reported separately, because on several of these climbs it is kilometres.
• Height gained is summit minus foot. It is not a running total of every rise, which depends entirely on the sampling interval and is the single biggest reason published figures disagree.
• Average gradient is height gained over length — not the mean of the per-sample gradients, which over-weights the flat bits.
• The steepest kilometre is the largest height gain over any 1,000 m window on the climb, sliding 10 m at a time.

How we got this Inventory queried from OpenStreetMap; the road walked from Gènova to Puig de sa Coma Fosca on the filtered island road graph; elevation sampled every 10 m and smoothed over 50 m. Comarca from OpenStreetMap admin_level=7 boundaries by point-in-polygon.Computed from OpenStreetMap road centrelines (ODbL) and IGN Elevacion4258_5, Spain’s 5 m national terrain model (CC BY 4.0 scne.es).Computed 7 August 2026.

Sources, because these licences require the attribution: road geometry © OpenStreetMap contributors (ODbL); elevation from the Instituto Geográfico Nacional (CC BY 4.0 scne.es); comarca boundaries from OpenStreetMap admin_level=7. This climb clears the 100 m the atlas requires of an entry; the ones that do not are listed there with their figures.

Gènova is the last named place before this climb, 2.0 km short of the foot — near enough to be riding it before the legs are warm. Somewhere to stay the night before. Otherwise it is a hire car from Palma, like most of the island. Both links are marked and pay us if you use them.