Tian Shan Astronomical observatory is a climb of 31.7 kilometers (hors catégorie). Tian Shan Astronomical observatory tops out at 3,332 m above sea level. It is located in Алматы, n/a, Қазақстан. The average gradient is 7.8% with a maximum of 16.9%. The climb has 2464 meters of elevation gain.
Difficulty analysis: This climb starts gently but builds into a sustained effort. The first half (0-16 km) alternates between moderate gradients (4-7%) and a few sections at 9%, acting as a warm-up. The real difficulty starts after km 16, with a demanding run of pitches often above 8% and peaking at 12% between km 16-17, 25-26 and 28-29. The last 10 km, averaging around 11%, are the ultimate test.
Pacing advice:
1. Rhythm management: Resist the urge to go too hard in the first 10 km. Use these easier gradients to settle into a steady breathing and heart rate before the critical sections.
2. Anticipate the steep bits: The steepest sections (12%) are short but brutal. Shift to an easier gear as you approach them (around km 16, 25 and 28) to keep your cadence up and avoid blowing up.
3. Break it down mentally: Split the climb into three parts: the approach (0-16 km), the hard middle (16-25 km), and the explosive finish (25-31.7 km). Focus on one section at a time to spread your effort more effectively in your head.
Cyclists who have climbed the road to the Tien-Shan Astronomical Observatory describe an intense natural experience. The ascent serves up breathtaking scenery, with stunning views over the Alatau mountains and Big Almaty Lake. One of the most memorable moments, according to riders' accounts, is finding yourself above the clouds, in air of rare purity.
This climb is no casual spin. Riders report that the road can be closed at certain times, so it's crucial to check before setting out. On top of that, access to the observatory itself seems restricted; some mention a military checkpoint and the possibility of having to show ID. It's first and foremost an active scientific station, not just a tourist viewpoint.
The atmosphere at altitude is described as unique, especially for a night out bivouacking. Riders warn about the extreme temperature swing: while it can be 40°C in town, the night in the mountains is bone-chillingly cold, even in July. That harshness is nonetheless rewarded with unforgettable sunrises that are well worth the effort.
Despite the beauty of the place, several cyclists raise one downside: the litter left behind by some visitors. The call is unanimous to respect this exceptional setting by packing out your trash. The experience is therefore also a lesson in responsibility, in a landscape that feels almost unreal.
31.7 km • 2464 m D+
VAM: average climbing speed, based on elevation gain
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