In May, a federal jury condemned Tsarnaev to die for bombing the 2013 marathon with his brother. Three people were killed and more than 260 were injured when the brothers detonated two pressure-cooker bombs near the finish line.
Under the federal death penalty law, Judge George O'Toole Jr. is required to impose the jury's sentence. Tsarnaev's sentencing hearing is scheduled for Wednesday morning in U.S. District Court.
Among those expected to speak are Rebekah Gregory, a Texas woman who lost a leg in the bombings, and Liz Norden, the mother of two Massachusetts men who each lost a leg.
Tsarnaev, 21, also will be given a chance to speak if he chooses.
