From Rainbow Reach, you can walk to Queens Reach on the Lake2Lake, or drive back to the Southern Scenic Route and head south 5 km to the entrance road. It is a short drive to a boat ramp for access to the Waiau River. From the boat ramp, you can follow the road around the River to a large grassed area, surrounded by bush, with several picnic tables and an easy River access point. After that the road narrows and is best left to the cyclists.
You can continue on the Lake2Lake to the control gates at the Lake Te Anau Waiau River Outlet, or take a car along Golf Course Road from Queens Reach, or go back to the main road, for the final few km to Te Anau.