Playa Principal, also known as Playa Las Terrazas, is the main beach in Pichilemu within the Provincia de Cardenal Caro. It is an expansive dark sand beach fronting the Pacific Ocean, directly in front of the historic Parque Agustín Ross. The beach is characterized by a shore break with cool water year-round, popular for swimming during the summer months. For paddlers, key access is facilitated by the park, which features long stairs and balustrades leading down to the sand. The beach is noted for its accessibility infrastructure, including two points with ramps and exclusive parking for visitors with mobility challenges, though these facilities are designed for general beach access rather than specific paddler amenities. The overall character is that of a busy, central urban beach, especially during the summer season.

The area is a prime location for surfing, with several surf schools such as La Ola Perfecta and Lobos del Pacífico operating nearby. This indicates consistent wave activity, making it suitable for experienced surf kayakers or paddleboarders comfortable in surf zones. The beach's northern end features a balcony over the rocks. Paddlers can explore south towards the rocky area known as La Puntilla. A notable nearby destination reachable from here is Punta de Lobos, a world-renowned surf spot declared a Reserva Mundial de Surf, located approximately 6 kilometers south of Pichilemu. This point offers a beach sheltered from southern winds and features a unique ecosystem with sea lions and a variety of birds, presenting a more exposed coastal paddle route for experienced individuals. The water remains cool throughout the year.