Don't expect it to just dissappear from one long road trip as I doubt that it will. Knowing that it's normal, it wouldn't bother me at all but if it bothers you, try cleaning it off as well as possible. You could even remove the dipstick tube and use solvents to remove all of it BUT until weather warms up, you might see it re-occur before then.
No matter what anyone here says, my point here is simply to not be alarmed over this, don't pay anyone money to incorrectly guess at costly and un-necessary engine repairs and don't start throwing more parts and/or wasted money (repairs) at it as it can't be fixed.
There are many people here and and other auto websites who take others bad advice, thow many un-necessary parts at cars, waste thousands of dollars and yet don't "fix" their cars.

Drive the car and be happy.