During the 2023 W7O SOTA Campout, we had the opportunity to activate Trap Mt.
This is an easy drive, though there are spots where the manzanita closes in on the roadway. Your vehicle's paint may not like it much. Otherwise, it has good gravel all the way to the trailhead. Take a left from Hwy 138 West onto NF-900, then a right onto Big Camas Rd (NF-3701). Take another left onto NF-3704 and follow that around and turn left on NF-230 and yet another left onto NF-250 and a final left on to NF-290. Google Maps was right this time!