Turner was previously convicted and sentenced to life without parole, plus 88 years.
Killed in the 2006 mass killing were Emma Valdez, 46; her partner, Alberto Covarrubias, 56; their two young children; Valdez's son and daughter, both adults; and her 5-year-old grandson.
Stewart was convicted on Dec. 11 and on Wednesday received 55 years in prison on each of seven counts of felony murder, along with additional sentences for criminal confinement, robbery, burglary and handgun possession.
A 20-year sentencing enhancement was added as well due to Stewart being a habitual felony offender, the Star reported.
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Cyclist struck and dragged underneath car