First Argentine Ascent
Lieutenant Nicolás Plantamura, from the Argentine Army, reached the summit on March 8, 1934, following the Normal Route in the company of two Italian climbers, P. Ceresa, P. Ghigliole, R. Chabod and the Chilean muleteer Mariano Pastén.

First Ascent to the Northeast Glacier (Polish Glacier)
In March 1934 the Polish climbers Otrowski, Narkiewicz, Daszinski and Osiecki opened a new route to the summit through the beautiful Northeast glacier, recording the eighth ascent to Aconcagua. Ever since this glacier has been called "Polish Glacier".

First female ascent
Achieved by the French Adriana Bance, on March 7, 1940, together with the German Jorge Link and the members of the Mendoza Mountain Climbing Club: Pablo Franke, P. Etura, D. López and J. Semper.

First ascent to the South summit
The German climbers T. Koop and L. Heroid reached the South summit for the first time in January 1947. They followed the Normal Route up to the middle of the gully, and from there headed to the right and took the saddle between the two summits.

First ascent to the Southwest edge
On January 23, l953 the Swiss F. y D. Marmillod and the Argentines F. Grajales and F. Ibáñez resched the South summit opening a new route. Likewise, this represents the first female ascent to the South summit.

First winter ascent
From September 11 to 15, 1953, the Argentines E. Huerta, H. Vasalla and F. A. Godoy achieved the first winter ascent through the Normal Route.

First ascent to the South wall
This extremely important first ascent of international repercussion was made by the French R.Paragot, G.Poulet, A.Dagory, L. Berardini, P.Lesseur, and E.Denis, who after seven hard days of climbing, finally reached the main summit towards the end of February 1954.

First ascent to the East Glacier (English Glacier)
During the month of February 1978, using alpine style, the Argentines G. Vieiro (dead), E. Porcellana (dead), and J. Jasson opened a new route of considerable technical difficulty and called it "Argentine Route".

First journey from the North to the South summit
On January 2, 1979 the Spanish X. Erro, M. Zabaleta and Y. Hugas achieved the first repetition of the Southeast edge, reaching the two summits and joining them for the first time. They descended by the Normal Route.

First winter ascent to the Polish Glacier
In the austral winter of the year 1980, the Catalan N. Serrat and A. Villena, supported by several climbers, reached the summit of Aconcagua following the Polish Glacier, resorting to skiing most of the route.

The first descent on hang-glider
In January 1981, the prestigious French climber J. M. Boivin piloted a two-seater hang-glider, descending in 30 minutes to Plaza de Mulas. The co-pilot was L. Marchal. The two men had to climb up to the summit three times until the weather conditions were adequate for the flight.

First solo ascent to the South wall
The French climber I. Girardini reached the summit on January 1981, after four days climbing and following the French/54 route, with the Messner exit variant, thus establishing a first outstanding record.

First winter ascent to the South wall
This hard first ascent was performed by a Japanese expedition in August 1981. T. Hasegawa reached the summit alone after following the Messner route.

First female ascent to the South wall
During the winter of 1984, the American climber Titonne Bouchard and her husband climbed the South wall following the Messner route, becoming the first woman to climb this difficult wall.

First paragliding descent
On February 2, 1985 the Captain of the French Air Force, A. Steves, opened his super-light paraglider some 200 meters below the summit and impelled by ascending currents rose some 20 meters above the summit, descending in 25 minutes to Plaza de Mulas.

First bicycle in the summit
In January 1986, the Swiss F..Mariani, R. Notaris and other climbers took a "Peugeot" bicycle to the summit. After filming the event, they descended part of the route mounted on this means of transport.

First Mendocinian ascent to the South wall
After an alpine-style ascent, following the French/54 route, the Mendocinian D.Alvarez, L.Sánchez, D.Rodríguez, A.Randis and the Colombian M.Barrios reached the summit on February 26, 1986.

First downclimb of the South wall
The extremely strong Slovenian climber, Slavko Sveticic, descended in 10 hours from the Guanaco edge to Plaza Francia, without using ropes. Before he had climbed with M.Romic a new variant of the Southwest edge, achieving the first ascent to the South pillar of the pyramid (6000 meters). January 1988.

First ascent to the West wall
A local group (Mendoza) composed of D. Rodríguez and D. Alessio climbed the challenging West wall of Aconcagua in four days in January 1988. The route goes along the center of the big, 2800-meter wall and ends in the Southwest edge, very close to the South summit. They climbed through several very steep ice cascades and several difficult rock passages.

Faster ascents up the Normal Route
January '87, L. Cichy (Poland), 9 hours. January '87, A. Randis (Argentina), 8,7 hours.
February '87, D. Alessio (Argentina), 7,48 hours. February '87, M. Sánchez (Argentina), 6,32 hs.
January '89, M. Dacher (Alemania), 6,l5 hours. January '89, M. Smith (U.S.A.) 6,13 hours.
January '90, D. Alessio (Argentina), 6,07 hours. December '91, D. Porsche (Germany) 5,45 hs.

First ascent to the two summits in one day
On February 6, 1991, Alejandro Randis climbed the two summits in one day, leaving from Plaza de Mulas. Total Time: base camp - South summit - North summit and descent: 14 hours and 30 minutes.

First ascent to the Polish Glacier in one day
In February l992 Miguel "Lito" Sánchez, Marcelo Acosta and Gabriel Cabrera became the first climbers to reach the summit from Plaza de Mulas, climbing the Polish Glacier in one day (descending via the Normal Route on the same day).

Largest number of ascents in one season
In the 2002 season, Gabriel Cabrera, a climber from Mendoza, reached the summit on six occasions in 42 days.