Walk the Length of Uptown via Riverside Park
Casually mention to your co-workers tomorrow morning that you walked all the way from 72nd to 158th along the park yesterday afternoon. Next to the gorgeous river views and the most trees you've seen since you left your godforsaken hometown of Nowhereville, Indiana, you won't even notice that you've trekked four miles. Riverside Park is the perfect manifestation of urban hiking and official best spot for petting strangers' dogs.
[Photo via @mdramachandra]