If being by the water is a major draw, Pass-a-Grille Beach is a spot you might want to check out, located 0.7 mi (1.2 km) from central St. Pete Beach. If you want to continue walking by the waves, head to Upham Beach and Upham Beach Park, both within a short walk.
Why not spend a lazy afternoon at Upham Beach Park during your trip to St. Petersburg - Clearwater?