From Manhattan by Subway:

Take the Q train to Prospect Park Station. Get in one of the last cars to exit on Flatbush Ave. Walk towards the Park, cross Empire Blvd., continue on Flatbush Ave., enter the Park on your left, look for the Carrousel on your right.

Take the 2 or 4 train to Grand Army Plaza. Enter the park through Grand Army Plaza and go down on the East Drive. You will be going against traffic, so please be aware of other bikers, joggers and walkers coming up the hill. The TA will be on your left across from the Boat House. Or when you exit the subway station, remain on Flatbush Ave. you will pass the entrance to the Prospect Park Zoo, enter the park on your next right at the Willink Entrance.C

BY CAR
From Manhattan:
Use Brooklyn Bridge, then left onto Atlantic Ave., then right on Flatbush Ave. Continue to Grand Army Plaza and go half-way around the traffic circle. You will pass the entrance to the Prospect Park Zoo, enter the park to your right at the Willink Entrance.

From Long Island & Queens
Via Interborough Pkwy. (Jackie Robinson Pkwy.) to Bushwick Ave. exit. Left onto Eastern Pkwy. to Grand Army Plaza. Go all the way around traffic circle to Flatbush Ave. south. Continue to entrance on right. Via Brooklyn-Queens Expwy. to Tillary St. exit. Left at second light onto Flatbush Ave., to Grand Army Plaza. Go half-way around the traffic circle. Continue on Flatbush Ave. to Willink entrance on right.

From Connecticut, Westchester and the Bronx
Bronx Whitestone Bridge to I-678 south, (Whitestone Pkwy.), to Van Wyck Expwy. to Interborough Pkwy. Jackie Robinson Pkwy. west to Bushwick Ave. exit. Left onto Eastern Pkwy. to Grand Army Plaza. Go all the way around traffic circle to Flatbush Ave. south. Continue to entrance on right.

From New Jersey
Bridges or tunnels to Manhattan, south on West Side Highway, to FDR Drive north and Brooklyn Bridge exit. From the Bridge, follow the "From Manhattan" directions.