You can take a train to grand central, depending if it is express train or local, approx 1 hour. You can drive, which could take an hour or lots longer depending on your route and time of day. I recommend the train since its walking distance from the park, or drive to station and pay to park. Use cabs or subway to get around NYC if you take the train.
From Queens it takes about 45 mins to an hours depending on traffic.
45 to 50 min from Grand Central.
1 h 21 min (44.3 mi) via Saw Mill River Pkwy N
About an hour to hour and 30m.
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