The train enterprise enables any luggage not exceeding 5 kg / 11 lb or a little have-on. Huge baggage can block the exits so it is usually recommended to leave at your Cusco resort o sacred Valley Lodge and decide them up immediately after Machu Picchu. Resource: Bob Pool / https://bestmachupicchutoursfromc59471.ltfblog.com/26344641/how-much-you-need-to-expect-you-ll-pay-for-a-good-machu-picchu-tours