Rivnuts from Homestead,PA on 9/27/2022 4:56:04 PM:
Unfortunately there is no other direct alternative to get to Harper’s Ferry from the Towpath. I suppose you could try to get an Uber, Lyft or other to take you, your bikes and gear across the river via one of the upriver or downriver bridges.
Perhaps, other forum readers know of another possibility unknown to me.