Rivnuts from Homestead, PA on 1/8/2025 11:28:16 AM:
I don't know Washington well enough to comment knowledgably on available, multi-overnight parking.
You might try Wheelzup Adventures for both rentals and shuttle. Of course there are others. For other potential shuttle services from Cumberland to Washington, Google the following for sources and costs:
"bike shuttles from Cumberland md to Washington DC"
I'm sure that others more familiar with the Washington biking community can offer other suggestions.