ORS § 161.605 : CRIMES AND PUNISHMENTS — GENERAL PROVISIONS —DISPOSITION OF OFFENDERS — Maximum terms of imprisonment for felonies TEXT PDF The maximum term of an indeterminate sentence of imprisonment for a felony is as follows: (1) For a Class A felony, 20 years. (2) For a Class B felony, 10 years. (3) For a Class C felony, 5 years. (4) For an unclassified felony as provided in the statute defining the crime. ORS 161.605 1971 c.743 §74