The M37 highway is a highway in Turkmenistan. It is the Turkmenistan section of the European route E60 and Asian Highway AH5, which connects Brest, France to Irkeshtam, Kyrgyzstan on the border with the People's Republic of China. It connects most of the major cities in the country from Türkmenbaşy on the Caspian Sea on the west coast to Bukhara, Uzbekistan.