I was out for 20 hrs, so give or take 2 min a drive average over the whole storm including travel. The main area I was working was 10 km or so from the shop and I had to go back twice for fuel.
When using my regular tractor (Case 120 Maximum with a 92" inverted Normand) in any given route I average 40-45 drives per hr including the drive between them. This time I was using a Case 85C with the same blower and undersized turf tires so travel speed was (just guessing here) 20% low and it was REALLY hurting for power plus I was bouncing all over the place helping others catch up and hitting missed drives/complainers rather than sticking to one specific area. That 6-700 also includes repeat visits to the same place throughout the duration of the storm. Drives are either 1 or 2 cars wide which means 2 or 3 passes wide. Single or double length adds negligible time difference as it's a difference literally of a few seconds to pull an extra car length once you are lined up and going. The company I drive for has about 5000 customers. Most of our drivers are in the 25-30 drives per hr. There's only a couple of us over the 40/hr