The Andermatt-Sedrun Sport AG (previously the Gotthard Oberalp Arena and the Gotthard Oberalp Skiarena (until 2013)) is a ski area located in Andermatt, Sedrun, and Oberalp in Switzerland. It has 16 ski lifts and approximately 30 runs, and just over 100 km of pistes. The ski area covers five separate mountains:

• Gemsstock
• Nätschen
• Sedrun / Oberalp
• Realp (small beginner slope only)
• Valtgeva (small beginner slope only)

It previously included Winterhorn, in Hospental, which was abandoned in 2007.

Train services (run by the Matterhorn Gotthard Bahn) are vital in this resort as they are the only means of transport available to travel from Andermatt (Nätschen and Gemsstock) to Oberalp, Dieni, and Sedrun. Between Andermatt, Hospental, and Realp can be journeyed by car as well as the railway.

Gemsstock is located south of Andermatt. It has 7 runs (31 km (19 mi) of pistes) and 4 ski lifts. Gemsstock is suitable for a range of skiers of all abilities, but in particular those who are more advanced.

Nätschen is one of the three main mountains making the ski area. It has 24 runs (39 km (24 mi) of pistes) and 5 lifts, and is located north of Andermatt. Nätschen is a mountain more suited for beginners. There is also a skiing area for children, served by two magic carpets. In 2017 and 2018, new lifts were constructed, creating a connection between Nätschen and Oberalp.

Nätschen generally closes early for the summer, as it is south facing and is quite low.

Sedrun / Oberalp is located near Dieni, and is the biggest of all of the three mountains' ski areas. It is good for skiers and snowboarders of all levels. It has 7 ski lifts and has 13 pistes (50 km of pistes). There is a large terrain park, a half pipe, and a ski cross course.

In Realp there is a single, small T-bar, and a beginner run. There is also cross-country skiing nearby, and a biathlon course. Access can be made here by railway or by car (from Andermatt only).

In Sedrun there are two small beginner runs, served by two T-bars and a magic carpet.

In Hospental, there is a mountain called Winterhorn, which has been disused since 2007. The 2-man chairlift and the T-bar remain in place. The mountain was generally suited to intermediate skiers. It was accessible by either railway or car (from Andermatt only).

There are in total 19 operating ski lifts in the ski resort Andermatt-Sedrun.

Mountain	Name	Type	Height of ground station(m)	Height of mountain station(m)	Construction year
Nätschen	Andermatt - Gütsch	8-man gondola lift	1444	2344	2017
Nätschen	Unter Stafel - Gütsch	Detachable 6-man chairlift with bubble	2160	2344	2016
Nätschen	Hinter Bördli - Strahlgand	Detachable 6-man chairlift with bubble	2135	2400	2017
Nätschen	Vordere Felli - Schneehüenerstock	Detachable 6-man chairlift with bubble	2165	2600	2017
Nätschen	Oberalppass - Schneehüenerstock	10-man gondola lift	2044	2600	2018
Sedrun / Oberalp	Oberalppass - Piz Calmut	Detachable 6-man chairlift with bubble	2049	2350	2015
Sedrun / Oberalp	Val Val - Calmut	4-man chairlift	1950	2350	1988
Sedrun / Oberalp	Val Val - Coulm Val	4-man chairlift	1950	2184	1988
Sedrun / Oberalp	Tegia Gronda	T-bar	2020	2260	1969
Sedrun / Oberalp	Mulinatsch - Cuolm Val	Detachable 6-man chairlift	1658	2213	2006
Sedrun / Oberalp	Planatsch - Milez	T-bar	1754	1900	1973
Sedrun / Oberalp	Dieni - Milez	Detachable 4-man chairlift	1500	1881	1994
Valtgeva	Valtgeva	T-bar	1445	1450	1962
Valtgeva	Strem	T-bar	1622	1774	1966
Gemsstock	Andermatt - Gurschen	Cable car	1444	2212	1991
Gemsstock	Gurschen - Gemsstock	Cable car	2212	2955	1990
Gemsstock	Gurschen - Gurschenalp	Detachable 6-man chairlift with bubble	2015	2285	2015
Gemsstock	Lutersee - Geissgrat	T-bar	2025	2398	1975
Realp	Realp	T-bar	1550	1660	1962

There are currently four disused, but still standing, ski lifts in the Andermatt-Sedrun Sport AG.

Mountain	Name	Type	Height of ground station(m)	Height of mountain station(m)	Construction year	Status	Final year
Nätschen	Dürstelen	T-bar	2010	2314	1981	Disused	2017
Nätschen	Grossboden	T-bar	2150	2364	1994	Demolished	2016
Nätschen	Nätschen - Stöckli	Detachable 4-man chairlift	1842	2314	1994	Disused	2017
Nätschen	Andermatt - Nätschen	2-man chairlift	1451	1858	1983	Demolished	2017
Sedrun / Oberalp	Oberalppass - Piz Calmut	T-bar	2049	2350	1987	Demolished	2015
Gemsstock	Gurschen - Gurschenalp	2-man chairlift	2015	2205	1982	Demolished	2015
Gemsstock	Gurschenalp	T-bar	2050	2285	1962	Demolished	2015
Winterhorn	Hospental - Lückli	2-man chairlift	1512	1961	1981	Disused	2006
Winterhorn	Lückli - Winterhorn	T-bar	1937	2355	1981	Disused	2006

The Andermatt-Sedrun Sport AG has four schools; one for the Sedrun skiing area, and three for the Andermatt ski areas. Each have several different classes, based on age and ability.

Plans are underway to replace the majority of the current ski lifts in Andermatt, along with new lifts and routes. The plans are for

• A new detachable 4-man chairlift replacing the current T-bar Lutersee - Geissgrat
• A new cable car providing access from Göschenen
• A new 8-man gondola lift replacing the current Cable car Andermatt - Gurschen

• Gemsstock
• Nätschen
• Sedrun
• Andermatt
• Oberalp
• Realp
• Hospental

46°38′15″N 8°35′35″E / 46.6375°N 8.5930°E / 46.6375; 8.5930