Lots of flat routes available from Pocomoke City north from Worcester County. It would probably be easy to figure out backroad routes between Crisfield and Pocomoke City. Just lots of smooth paved farm roads once you leave the main highway.

http://www.visitworcester.org/index....view-trail-100

That link includes a PDF but just give them a call and they will send you a great big glossy copy in the mail (for free no less!).