Relationships between sexual abuse and sexual risk, substance use, emotional distress, and conduct problems were examined among 190 runaways. Those who had been abused were significantly more likely than nonabused peers to engage in unprotected sex, have more sexual partners, and use alcohol and drugs, but did not differ in emotional distress. Those abused after age 13 were more often engaged in sex work than nonabused peers. Males abused before age 13 had more sexual partners than those not abused, and runaway males were significantly more likely to have been sexually abused than has been reported in prior research.