1.

West and east side drive become a closed circuit in which people rides their bicycles, skate and jog. You can either do the whole circuit : 4 miles, or only half.
The slopes at the north are a bit hard for begginers

2 (txt).
circuit: do what everyone: run, skate, ride, but don't stop. If you prefer seat in a bench and watch the people passing arround

3.