The Theodora Nature Trail is located within the Balaton Uplands National Park. Along 15 stations, hikers can learn about the natural treasures of the Káli Basin as well as the origins of the Theodora mineral waters. The hike starts from the Theodora Kereki spring at the bottling plant of Kékkúti Ásványvíz Ltd., located 3 km from the northern shore of Lake Balaton, and follows the Sásdi stream towards Kornyi Lake. The trail is 8 km long and can be comfortably completed in 3–4 hours. Along the way, visitors can enjoy the diverse flora and fauna of the Káli Basin, the picturesque surroundings of the streams and lakes, and gain insight into the secrets of the local mineral waters. The trailhead is easily accessible by car or public transport, with parking available nearby.