Trails:

Just over 70 kms of groomed runs provide skiers and snowboarders with descents of varying difficulties, from a height of 11,253 feet above sea level to the base at an elevation of 7,349 feet. The vertical drop of the lift-served, in-bounds area of Las Leñas ski resort is a hefty 4,035 feet, with gradients ranking from 12% to 53%. The lift serviced area is sufficiently vast to cater to both intermediates and to a lesser extent pure novices. There is no doubt the field favours middle experience to advanced skiers and snowboarders, with a plethora of red and black runs and massive swathes of easy access back-country.
By some accounts, in excess of 500,000 sq hectares of wild back-country is readily accessible from the top and west of the Marte and back routes. Farther afield you can actually cross country a mountain ridge top and then descend to the road that leads into Leñas about 8kms down the valley.

Chairlifts:

Built in 1983, Las Leñas has the most modern lift system in South America, yet its lifts are a little slower and somewhat old-fashioned compared to US & European infrastructure. Lift lines are all but non existent at Las Leñas; 12 ski lifts boast a total uphill capacity of 9200 skiers per hour, while only 3500 beds are available at the resort. The ski lifts are named after Roman and Greek Gods: Venus, Eros, Minerva, Vesta, Vulcano, Jupiter, Apolo, Neptuno, Mercurio, Caris, Selene, Juno, Iris, Marte, Urano, and Cenidor. Lifts run nonstop from 8.30am to 5pm daily.