State Road 125 or NM 125 is a state highway in the U.S. state of New Mexico maintained by the New Mexico Department of Transportation (NMDOT). The 25-mile (40 km) road, located entirely within Lea County, begins at US 380 near Tatum and ends at the Texas state line where the road meets the numerically continuous Texas State Highway 125 southwest of Bledsoe, TX. The road also has a major intersection with NM 508.