For a spin out along the coast, take advantage of BiCas, Cascais' free bike-hire scheme. Over 1200 new bikes were introduced in 2018 and are available from 8am to 8pm daily from 76 stations around the municipality, including as far away as Parede and Estoril. You'll need to register via the app (use '123456789' in place of the Portuguese tax ID known as a 'NIF'), select a time frame in the store section of the app and follow the instructions for unlocking your bike. There’s a bicycle path that runs the entire 9km stretch from Cascais to Guincho. A shorter route is along the attractive seafront promenade to Estoril, 2km east.