Loose yourself without getting lost, Steps down to the Hudson River, If you are not familiar with the area start at the Alpine lookout after exit 3 on PIP north. Running south along the Green trail cut down to the river along the White shore trail which will loop back to the green trail. Run along the River looking up at the Palisades rock face and across the river at Westchester's rat race. May be the best trail run and so close to the city. In fact take the green trail to the GWB and into Manhattan or loop back. Just watch your step.