There are many signposted trails on Ärjänsaari Island. Even though there are no paint markings on the trails, it is easy to trek along the them. You cannot get lost on the island. The trail that takes you round the whole island is roughly ten kilometres long, but you can also go on a shorter hike, as there are various route options. It is easy to walk along the trails, and there are duckboards along the moister sections. You may also hike outside the marked trails. However, please trek along the trails in order to preserve this erosion-sensitive island for the next generation of visitors.