I hiked from Mcleod Ganj to Triund, the day hike provides a beautiful view of the first peaks of the Himalayas and a wide view over the plains. As the peak is 2,875 m, make sure to wear good shoes, carry water, some food if you and an extra vest or coat. At the top, even in summer, the weather can change from hot and sunny into a small snowstorm very quickly.
This is a 5 km trek (one way), through jungle and is quite a climb. It can be done as a day hike or also possible to camp and return the following day.