Ask a Zurich resident where they walked last Sunday and they almost certainly won't say the Bahnhofstrasse. More likely: somewhere in the Adliswil-Albis ridge, the Käferberg forest above Höngg, or the serpentine paths through the Sihlwald — a 1,000-hectare primeval woodland that sits just 14 kilometres south of the city centre and receives a fraction of the foot traffic its ecological importance deserves.
These spots matter right now for a specific reason. Switzerland's Federal Office of Sport reported in its 2025 Sports Activity Monitor that 75 percent of Swiss adults walk or hike as their primary form of exercise — a share that has climbed steadily since 2019. In Zurich canton alone, the municipal parks and forests authority, Grün Stadt Zürich, maintains over 460 kilometres of marked walking and hiking paths. Yet the routes that appear on tourist maps represent perhaps a tenth of that network. The rest belong, in practice, to locals who discovered them through word of mouth, school excursions, or sheer curiosity about what lies beyond the next ridge.
The Trails Zurichers Keep to Themselves
The Käferberg is the best example of this quiet possession. The forested hill climbs to 571 metres above the Höngg neighbourhood in the city's northwest, reachable by tram 13 to Frankental and then a twenty-minute walk uphill past the Rebhügel vineyard terraces. On a weekday morning the path is almost entirely populated by dog walkers, trail runners and retirees doing their constitutional. There is no entrance fee, no visitor centre, no queue. The canopy of beech and oak holds the heat down even in early July, and the western ridge offers a clear sightline to the Uetliberg without the Uetliberg's weekend crowds.
The Sihlwald is the other open secret. Managed since 2010 as a UNESCO-recognised wilderness zone under the Wildnispark Zürich umbrella, it is Switzerland's largest near-city forest reserve and is legally left largely unmanaged — fallen trees stay where they fall, streams find their own channels. The main entry point at Sihlwald station, reachable by the S4 S-Bahn line from Zürich HB in around 25 minutes, costs nothing beyond a standard zone-10 transit fare of CHF 2.80 with a Zürich Card. Most visitors to the city never learn the S4 exists.
Then there is the Zürichberg on the east bank, above the Zürichbergstrasse and the Rigiblick quarter. The forest paths here wind between the Zoo Zürich perimeter fence and small clearings with benches facing west toward the old town. Early morning runners from Hottingen use these trails daily. The paths connect, with minimal signage and maximum charm, all the way north to the Adlisberg tower at 697 metres — a round trip of roughly 12 kilometres that costs nothing and ends, traditionally, with a coffee at the Adlisberg restaurant.
How to Actually Find These Routes
Grün Stadt Zürich publishes a free printed trail map, the Stadtplan Wanderwege, available at city information offices including the main point on Bahnhofplatz. The organisation also maintains a digital path finder at stadt-zuerich.ch that filters routes by distance, elevation gain and surface type — a genuinely useful tool that most tourists never encounter because it is primarily in German.
The Swiss Alpine Club, the SAC, operates its Zurich section from offices near Helvetiaplatz and runs free guided introductory walks on the first Saturday of most months. Participants need no membership to join a first outing. The club's app, SAC Hikr, carries community-submitted route notes for dozens of trails within the city canton, many with current condition updates from walkers who were there within the week.
For anyone thinking about starting a regular outdoor walking habit — which exercise physiologists increasingly describe as one of the most sustainable forms of cardiovascular maintenance available — the practical advice is simple: take the S4 to Sihlwald, take tram 13 to Frankental, or walk up from Rigiblick. Bring water. Leave the tourist map in the hotel. If any joint or respiratory concern makes you uncertain about elevation or exertion level, a quick consultation with a local Hausarzt before tackling steeper ascents is worth the twenty minutes. Zurich's forests will still be there when you get clearance. They have been there since before the city existed.