Here's what I did on an 80 km trip. It works out to ~73.5 MPG. Other days were other drivers. Bring on summer and I will do better.
Recently I drove 100 miles in stop and go freeway traffic plus a few miles of city traffic resulting in 61 miles per gallon in my 2015 Prius. Light foot, downhill coasting, anticipating stops so foot off accelerator and light braking for regen...