The remainder of the line is operated as a rack railway using the Abt system, overcoming a height difference of 550 m (1,804 ft) with a maximum gradient of 15.6%.

Competition arrived in 1930, in the form of the Aeri de Montserrat, an aerial cable car that also carries passengers to the monastery.

After many years of planning, a program began to rebuild the rack railway in 2001, and the line re-opened in its modern form on 6 June 2003.

The line also has a 1930 built electric locomotive, E4, transferred from the Vall de Núria Rack Railway for use on works trains.

A track connection is provided at Monistrol to allow rack railway cars to run to and from their depot, which is in nearby Martorell.

Additional trains operate between Monistrol Vila, where the line has a car park with 1000 spaces, and the summit.