Here are the numbers from yesterday's ride.
Total trip distance - 35 miles
Total riding time - 3 hours and 15 minutes
Load - 120lbs, 8 boxes of CSA shares, plus a pannier with a bit of farm gear
The full load was carried for less than half the route, although that comprised the part of the route with the most elevation gain and a very serious headwind yesterday. I had to be conservative with the electric assist and save it for the worst of the wind and hills. By the time I dropped the final shares at Near East Yoga I was down to no bars on the battery monitor, although there was still a little left for the 8 mile ride home. For the first 27 miles I was working hard to keep to a schedule. The eight mile ride home I took it easy (relatively), although it was so much easier with a load of just two empty boxes.
By way of comparison, when I do the route with a car it takes about 1 hour 30 minutes, and I pay for about 30 minutes of parking at delivery spots. I also eat a lot less, man was I hungry when I got home last night.