My trip to work(one way 65miles) with highs usually 66-70mph. My trip average was always 40-45 mph no matter how I drove it seemed. That was with my scan gauge. But even on the bike with just a clock it always takes me 1 hr 20 to 1 hr 35 minutes to get to work or home.
So if they took the two lanes roads and through some state where the speed limit is 55 mph on the highway. I can see this average. All about route planning.
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