Observatorio Collowara is a climb of 33.8 kilometers (hors catégorie). Observatorio Collowara tops out at 1,269 m above sea level. It is located in Coquimbo, Región de Coquimbo, Chile. The average gradient is 3.6% with a maximum of 17.9%. The climb has 1204 meters of elevation gain.
Difficulty breakdown: This climb has a two-part profile. The first 15 km (average gradient of 2%) is a long, rolling approach. The real difficulty starts at KM 15 with a demanding 4 km stretch at 7-8%, followed by several sections at 5-6%. The finish is particularly steep, with the last 800 metres averaging 13%.
Pacing advice:
1. Managing your pace early on: Resist the temptation to go hard over the first few kilometres, which are barely uphill. Use them to settle into a steady rhythm and save your legs for the critical sections.
2. Preparing for the KM 15-19 wall: The gradient ramps up sharply here. Get ready mentally and physically to shift into an easier gear and keep a smooth cadence through this key section without blowing up.
3. Saving something for the finish: Despite a slight easing around KM 26-27, the final kilometre is brutally steep (13%). Keep enough in the tank to tackle that decisive last effort.
According to riders who have climbed the road to the Collowara Observatory, the ascent is an adventure in itself. The road is mostly paved, but it turns to dirt for the last kilometre and is described as twisty, with plenty of switchbacks and steep gradients. Some riders mention narrow sections and unprotected drops, so you need to ride with care, especially at night when there is hardly any lighting.
The effort is more than repaid by breathtaking scenery. Riders talk about stunning views over the valleys and, if you ride up late in the day, spectacular sunsets over the mountains. Reaching the summit gives a real sense of accomplishment, along with a 360-degree panorama.
The summit experience depends heavily on the weather and the sky conditions. Riders agree on one point: to fully enjoy the starry sky, it is ideal to pick a moonless night with clear skies. A moon, especially a full one, cuts down the visibility of the stars considerably. Riders should also prepare for a bitter night-time cold and sometimes strong winds at altitude.
The atmosphere at the observatory is described as immersive, a place of calm and serenity that invites you to contemplate the vastness of the universe. However, some riders point to light pollution from the nearby town of Andacollo and the mining installations, which can spoil the purity of the night sky.
33.8 km • 1204 m D+
VAM: average climbing speed, based on elevation gain
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