Where was the bus headed to when Jenny left D.C. In Forrest Gump?

Jenny doesn't leave D.C. on a bus in Forrest Gump. She leaves with Forrest for a short time, but then goes on her own.

When Jenny leaves D.C. the second time, she does so by hitchhiking. She ends up in Mobile, Alabama with a group of hippies, where Forrest eventually finds her.