On highway 49 (Jungo Road) north of Gerlach. Trego Hot Springs is not marked from the road - it is recommended to use a GPS to navigate to this location. Trego Hot Springs is the location of a railroad track crossing for access to the Black Rock Desert playa.
I wouldn't return to these springs. The area has been heavily abused by irresponsible campers and partiers and the ground is littered with rusty nails, broken glass, and trash. I wouldn't drive my truck in here again much less walk or swim here.