Uetliberg Planetenweg

The Uetliberg Planetenweg is a model solar-system trail that runs along the ridge of the Uetliberg, Zürich's local mountain in Switzerland, from the summit area toward Felsenegg. The path presents the planets as scaled markers set along a forest and ridge route, so that walking the distance gives a feel for the vast spaces between worlds. The trail begins near the Uetliberg summit, which is reached by the S10 train from Zürich Hauptbahnhof in roughly 20 minutes, and follows a mostly level ridge path through beech and fir forest with occasional open views over the city, the lake and the Alps. Information boards along the way explain each planet and give scale comparisons for diameter and distance. The walk is about 6 km one way and takes roughly 1.5 to 2 hours at a steady pace, ending at Felsenegg, where a cable car descends to Adliswil and connects to the S4 line and city transport. Many visitors begin by climbing the summit tower for a panorama before setting off. The ridge is popular with families, joggers and hikers, and the route is signposted and well maintained. The best photo angles are from the viewpoints looking east over the lake and west toward the Albis hills. Weekends in fine weather draw the largest crowds, especially near the summit restaurants, while weekday mornings are quiet. Autumn, with a sea of fog below the ridge, and clear winter days are especially rewarding. Sturdy shoes are advisable, and in winter the path may be snowy or icy. The route is free to walk, with fees only for the train, cable car and summit tower. Visitors should carry water, as services along the ridge are limited.