My longest one-day ride was 174 miles on one charge. I set out to do try for max and did a local big loop. I did not have a pack, or the dog and was riding on 29" Schwalbe G-One tubeless tires. My saddle is an Infinity Seat saddle. My average speed was 13.7 mph and I used 2019 Wh (46.4Ah out of 49 on 52 volts). It was sunup to sundown.
Previous to that I did a tour from my house to my mother's house in Michigan. Fully overloaded for touring and into a head wind I did 144 miles with two charges totaling some 4,000+ Wh. Headwinds really kill a battery. I have a 52 volt 15 amp charger and charge all four batteries in parallel at once. Total battery capacity is 2,540 Wh. I journaled here
https://ebikes.topicwise.com/doc/?o=3d2&doc_id=23596&v=21