Siuntio Hiking Trails

This trail is about 1.7 km point to point on the Siuntio side of the large Kopparnäs-Störsvik seafront reserve in Uusimaa, linking the Sandviken beach and service cluster with the Störsvikin Pysäköintialue beside the waste-water treatment plant. For campfire rules, forest-fire prohibitions during wildfire warnings, dog leash policy, route marking colours, and notes on winter road and parking plowing, the Kopparnäs-Störsvik destination page from the Uusimaa Recreation Area Association (UUVI) is the place to start(1). The City of Siuntio lists Kopparnäs–Störsvik among its nature and outdoor destinations for walkers and cyclists looking west from the capital region(2). On the Sandviken end you reach Sandvikenin uimaranta with Sandviken tulipaikka steps away—classic archipelago sand and granite—and dry toilets are available without naming each structure separately around Sandvikenin WC. Störsvik rantautumisopaikka and Kurubackudden Kiinnitysrengas (2 kpl) sit near the inner shoreline for small boats, and the line continues toward Störsvikin Pysäköintialue. About half a kilometre along the trace you pass nearest to Sandfjärden rantautumispaikka, Sandfjärdenin Parking, Sandfjärden katos 1, Sandfjärden katos 2, Sandfjärdenin tulentekopaikka, Sandfjärden etelä - tulipaikka, Sandfjärden Kaivo, and Sandfjärdenin Wc; those services are easiest as a detour if you are also walking Kolaviken-Sandfjärden reitti. UUVI describes the Störsvik treatment-plant parking to Sandviken leg as a little under two kilometres and suited to easy mountain biking on a multi-use treadshared with walkers, with two short rocky stretches along the way(1). Retkipaikka’s Marja Utela walked from the same plant parking on a quiet summer day, noting dense forest, big anthills, alternating rock slabs and woodland, and the wide empty Sandviken sand beach before looping back by road on a longer outing(3); her impressions match the sheltered-alder and open-rock mix you still find on this shorter shore connector. Marked Kolaviken-Sandfjärden reitti, Österviken - Sanfjärden -rantareitti, Brändöskatans bulevard, and Råbergets runda -rengasreitti share beaches, parking, and cooking shelters nearby, so you can stitch a longer day without repeating every metre.