From the parking area at the Hechtsee the path leads you to the Egelsee within 15 minutes. Due to its nature conservation status you can enjoy interesting flora and fauna around the lake. Keep left in the direction of Hechtsee and follow the forest path next to the lake until you reach the next fork in the path. Turn left and keep following the path, past the Längsee and across the Thierseestreet to the Pfrillsee. You'll reach the starting point by crossing the Thierberg.
Possibilities to stop for a bite to eat: Gasthof Neuhaus, Restaurant Hechtsee