Many beaches fringe the peninsula; some attract nude bathers. Mareta, at the bottom of the road leading from the center of town toward the water, is the best and most popular. East of town is Tonel, also a good sandy beach. The beaches west of town, Praia da Baleeira and Praia do Martinhal, are better for windsurfing than for swimming.
If you'd like to rent a bike to explore the cape, go to Posto de Turismo, Rua Comandante Matoso, Sagres (tel. 28/262-48-73). The charge is 8€ for 4 hours and 12€ for a full day.
Between October and January, you'll be assured of a prolific catch; and at times, you can walk down to almost any beach and hire a local fisherman to take you out for a half-day. Just about every large-scale hotel along the Algarve will arrange a fishing trip for you.