Trans-Alai

Trans-Alay Range
Чоң Алай кырка тоосу Заалайский хребет
Trans-Alay Range and Alay Valley
Highest point
Peak	Lenin Peak
Elevation	7,134 m (23,406 ft)
Coordinates	39°20′00″N 72°55′00″E / 39.3333°N 72.9167°E / 39.3333; 72.9167Coordinates: 39°20′00″N 72°55′00″E / 39.3333°N 72.9167°E / 39.3333; 72.9167
Dimensions
Length	250 km (160 mi) E-W
Width	40 km (25 mi) N-S
Geography
Location in Tajikistan
Country	Kyrgyzstan, Tajikistan
State/Province	Osh Province, Gorno-Badakshan
Geology
Age of rock	Paleozoic and Mesozoic
Type of rock	Limestone and schist

The Trans-Alay Range (Kyrgyz: Чоң Алай кырка тоосу, Chon Alai Krka Toosu; Russian: Заалайский хребет, Zaalaisky Khrebet; also 'Trans Alai') is the northernmost range of the Pamir Mountain System.

The Trans-Alay is located in the area where the Pamirs and the Tian Shan come together. This heavily glaciated range forms the border between Gorno-Badakshan province in Tajikistan and Osh Province, Kyrgyzstan, stretching eastwards until the border with China. To the north lies the Alay Valley and to the south, the Muksu River.

The highest peak in the range is 7,134 m high Lenin Peak. The Kyzylart and Ters-Agar mountain passes geographically divide the range into three parts: the western —highest peak Sat Peak () (5,900 m), the central —with some of the highest summits, including Lenin Peak, Dzerzhinsky Peak () (6717 m), Oktyabrsy Peak () ( 6780 m), and Marshal Zhukov Peak (6,842 m), and the eastern — highest peak Kurumdy I summit (6,614 m).