Walk up to a blue station, unlock a bike, take a job, ride the real Prospect Park loop and the streets around it, then dock at any station before your 30 minutes run out.
Computer: ↑ / W pedal · ↓ / S brake · ← → / A D steer · Space unlock / dock · B bell · M map · X speed (Normal / Fast / Turbo) · hold Shift = turbo · or click the on-screen arrows
Phone: hold ▲ to pedal, ▼ to brake (left thumb) · ◀ ▶ to steer (right thumb) · blue button to unlock / dock · SPEED button = Normal / Fast / Turbo