I go Jersey Ave ->right on 10th st after Hamilton Park -> cross Marin (this is the worst part of the run, just eye down drivers and make them stop) -> Around the Ellipse building, then waterfront all the way up to Jersey Ave again. Depending on how many piers you take this is a 4-6 mile run. The only sketchy parts are the aformentioned Marin, crossing Christopher Columbus, and Grand st., but with enough experience youll get it.