The invention relates to a process for the production of 1,3-butadiene comprising reacting a feed comprising ethanol and acetaldehyde in a 1,3-butadiene producing reactor having at least one adiabatic reaction zone. Moreover, the invention relates to a process for the production of 1,3-butadiene from ethanol ater comprising i. producing acetaldehyde from ethanol in an acetaldehyde producing reactor, and ii. producing 1,3-butadiene from ethanol and acetaldehyde in a 1,3-butadiene producing reactor. The invention further relates to a plant for the production of 1,3-butadiene comprising at least one 1,3-butadiene producing reactor producing 1,3-butadiene from ethanol and acetaldehyde. Finally, the invention relates to a plant for the production of 1,3-butadiene from ethanol, comprising i. an acetaldehyde producing reactor, and ii. a 1,3-butadiene producing reactor.