Training Camp -- Day 1 rundown.

[That Guy]

Originally Posted by BDBohnzie

next time you leave, you can turn right off redskins park drive onto loundon county parkway. that'll take you up to Route 7, where you'll turn right. then hop back on 28, and that'll take you back to the Dulles Toll Road, without the 3.20.

that looks like a long way around to the same spot (you can turn left and get on 28 much sooner) that ends up with a toll booth on the on-ramp.

at least from looking at this map:
Google Maps