Rishikesh, also known as "Yoga capital" of the world, has numerous yoga centers Ashrams and Temples. It is believed that meditation in Rishikesh brings one closer to attainment of moksha, as does a dip in the holy river Ganges that flows through it.
Since mid 80's Rishikesh got famous for adventure activities like Trekking, Rafting and many other adventure sports. Rishikesh is also starting point for famous Chardam yatra (Pilgrimage).
Rishikesh attract several thousand of Pilgrims, tourist and adventure seekers every year. If you are looking for trekking in Rishikesh, There are many beautiful treks and walks around Rishikesh.
Rishikesh has its own charm all time of the year, however for trekking around Rishikesh autumn (Oct-Dec) and spring (Feb-April) is the best. During summer season (May-June) Rishikesh is hoter (35c+), however you can go further higher for Himalayan treks.