R2 is an expressway (Slovak: rýchlostná cesta) in Slovakia, which begins near Trenčín and ends near Košice.

In view of the current intentions of the Ministry of Transport, the entire length of the expressway cannot be expected to be operational before 2050.

[1] In October 2012, work began[2] on an almost 6 kilometres (3.7 mi) half-profile bypass around Žiar nad Hronom, which was put into operation on 15 December 2014.

[4] The 7.8 kilometres (4.8 mi) section between Zvolen East and Pstruša has been put into operation in May 2017, receiving a EUR 44 million contribution from the European Union.

The construction of this section of the highway is financed from the state budget, and is carried out by a consortium of Doprastav, Strabag and Eurovia SK/CZ.

Construction there began in March 2022 at a total cost of EUR 202 Million with VAT, cofinanced by the European Union.