I am a frequent trekker and the hardest thing when I'm going trekking is always deciding which trek to go for. I often browse the Indiahikes website to look up different treks and pick the best one because it is always a one time experience. You may not get to go trekking every month or every year, it is recommended that you go for the most sought after treks when you do decide to go. "So where should I go now, probably Roopkund because its height is 16,400 ft" But then I have people telling me that the altitude is too much for a beginner and I should go for the easy treks first. Though Sandakphu is 77km and Roopkund is 47km, a distance of 30 km on the mountain does make a lot of difference, atleast this is what I thought.