Biden and his wife, Jill, plan to attend the Tuesday ceremony. The vice president's office says they'll pay tribute to victims of the bombing, as well as the survivors and first responders.
April 15 marks the one-year mark since two bombs exploded near the finish line of the marathon, killing three and wounding hundreds. The explosions plunged Boston and its suburbs into a week of chaos amid a manhunt for two brothers accused of planning the attack.
President Barack Obama traveled to Boston shortly after the bombing in 2013 to offer condolences to victims and others.