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Osh Main from the southeast via the couloir of the Eastern spur of the Southern ridge The route is rocky, category 2A difficulty (fig. 5, 49, 57, 58). Length — 1300 m, elevation gain — 600 m, time — 3–3.5 hours. The approach path from the "Kirgizata" alpine camp (group of 4-20 people) to the initial bivouac on the light moraine of the upper circus of the Kurgan gorge — see in the route
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From the initial bivouac, approach the wide scree, the first southern couloir from the base of the Eastern spur, with a long rocky outcrop in the center. From the moraine, 300–400 m up, on 30–35° fine and medium scree of the couloir, left of the long outcrop, then on simple rocks of the narrow destroyed couloir ("live" stones, protection) ascend to the saddle of the Eastern spur. From the initial bivouac — 1–1.5 hours.
On the saddle of the Eastern spur:
- turn left
- on simple and easy, heavily destroyed, gently sloping rocks
- in the upper part — on scree
Pass the 400–500-meter Eastern spur or its right side, exit to the scree shoulder of the Southern ridge.
On the scree shoulder of the Southern ridge:
- turn right
- on easy, gently sloping, in places heavily snowed and destroyed rocks and scree
Pass the 250–300-meter Southern ridge and ascend to the summit Osh Main. From the saddle of the Eastern spur — 1.5–2 hours.
