A guidebook to 40 walks spread throughout Portugal, with a focus on the country's many natural and national parks. Walks are graded from easy to challenging, with options to suit most abilities and ambitions.

The walks range from 5 to 46km (3–29 miles), with the two longest routes offering optional overnight stops; the day walks can be enjoyed in 2–11 hours. A handful of routes are easily accessible from Lisbon, with others covering Peneda-Gerês National Park, Serra da Estrela Nature Park and the Algarve.