Originally Posted by
philbob57
IIRC, East to West goes against prevailing winds.
Against the upper atmosphere winds. Different story at ground level. I rode west to east on the Northern Tier route had hand plenty of days with headwinds. Someone once overlaid a map of the Trans Am route (which the OP is taking) with a prevailing surface winds map for July. Prevailing winds were out of the southeast, meaning a tailwind heading west.