Coll de s'Heura from Son Serralta

The carretera de Sobremunt / Ma-1041 crosses coll de s'Heura at 324 m. Climbed from Son Serralta it is 9.6 km long and gains 222 m, an average of 2.3%.

This is one of the steep ones: 14.1% over its hardest kilometre, the 2nd steepest of 75. The steepest kilometre comes early, from km 2.6, so the hardest part arrives before you have settled into it. 32% of it is at 8% or steeper. This is the easier way up. From Esporles the same summit averages 5.2%, against 2.3% on this side. Take this one if you want something left at the top, and the other if the climb is the main event of your day. The nearest town where you can book a bed is Palma, 9.0 km by road from the foot of the climb.

Build a week around this climb →

The climb is measured from where the road stops going down, and that point sits 5.8 km beyond Son Serralta — so you will have ridden 5.8 km from the village before the numbers below start. None of the figures include that approach.

The profile

Length

9.6 km

from 101 m at the foot to 324 m at the top

Height gained

222 m

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

Average gradient

2.3%

height gained over length

Steepest kilometre

14.1%

from km 2.6

Kilometre by kilometre

The worst whole kilometre below runs from km 3.0, at 14.0%. And it is not all up: at least one kilometre of this climb goes downhill. You will ride 512 m of ascent to end up 222 m above the foot.

The bends, counted

This side has 15 hairpins, where a hairpin means a turn of at least 135° taken inside 150 m of road. They fall between km 2.3 and km 7.1: 15 of them in 4.8 km, or 3.1 per kilometre through that stretch. Count every turn of 135° however much road it takes, and the figure is 19, which is why the hairpin counts in guides so often disagree.

That puts this road 3rd of the 116 climbs with a hairpin count, at 1.6 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.

How it compares with every other climb here

Its steepest kilometre averages 14.1% against an island median of 7.1%, so it is steeper than the typical climb here. It gains more than the 192 m of the median climb on the island. The table sets every other measure against the island median in the same way.

The gear it asks for

Whether you ride up a climb or walk it depends on its steepest sustained kilometre, which here is 14.1%, far more than on its average. The calculator below uses that figure and opens on this climb: change the chainring, the cassette and your weight and it tells you what cadence that gear turns.

Temperature at the top, and what the way down feels like

You finish this climb 222 m above where you started it, and it is colder up there. In January, the coldest month at this top, the foot of the climb averages 13.6 °C around 12:00 while the top averages 11.8 °C. That is an arm-warmer's worth: 1.8 °C bought with 222 m of climbing. In July the same top sits at 28.5 °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 — 6.7 °C standing still — feels like 2.3 °C at the slower speed and 1.0 °C at the faster one. By 12:00 the air at this top is too warm for the wind chill index to apply, in every month of the year, so a cold descent here is an early-morning problem. Whatever you would wear on the way up, the way down is the reason the gilet is in the pocket.

The temperatures are read by height between two thermometers 1,007 m apart, so a top on the north coast gets a figure measured elsewhere on the island. They are also open-sky readings: where the mountain shades the road, the morning will be colder than the table. What the temperatures do across the whole island, and what to put in the pocket, is on the kit guide.

The other side

There are two ways up to coll de s'Heura, and they ride differently. Here they are side by side:

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 you can filter and sort all 75 climbs at once.

How this was measured, and how to read it

• The list of climbs comes from a query against OpenStreetMap: every named pass on a paved road, and every named summit above 150 m where a paved road ends. 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. It is not a GPS trace of one ride, so no rider’s wander or lost signal ends up 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 before the portal are left out. One climb 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. A running total of every rise would depend entirely on the sampling interval, and that is the biggest single reason published figures disagree.
• Average gradient is height gained divided by length. The mean of the per-sample gradients would over-weight the flat stretches, so it is not used.
• 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 Son Serralta to coll de s'Heura 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.

Son Serralta is the last named place before this climb, 5.8 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.