Probably the hardest 3.7km of climbing you'll do in the area.
A short but brutal climb used twice on the finish of stage 9 of the 2015 and 2017 Vuelta a España.
To access the climb turn off the CV737 at the roundabout between the supermarkets Aldi and Mercadona, then take a left turn (last exit) at the next roundabourd and then bear right.
The 18% ramp that marks the start of the climb appears in front of you like a wall. After grinding your way up this first 500m there is a small section of flat.
Keep following the 'Cumbre del Sol' signs or you'll end up lost in the Urbanization which covers the mountain.
As the road rises again to 14% you can try to enjoy views across the Mediterranean sea to Calpe on your right.
You'll reach a roundabout, take the last exit then the second left 700m from this roundabout. You'll know you're on the correct road, not just due to the unrelenting gradient but you're following the names of some of the worlds best climbers painted on the road.
After the last bend, the last 500m metres to the summit continue at this steep gradient.
At 400m above sea level, climbed in less than 4km, the panoramic views are breathtaking, thats if you've got any breath left.
Approach this climb with extreme caution - it's very, very tough and not for the faint hearted.