The Himalayan Startup Trek (HST) Grand Challenge is an annual flagship pitch competition hosted by IIT Mandi Catalyst to bring together startups, investors, and mentors from across India. The event aims to boost the startup ecosystem in the Himalayan region by offering cash grants and incubation opportunities to startups with innovative ideas. The challenge focuses on four key thematic areas: Human Computer Interaction, Build for Himalayas, Environment and Sustainability, and Bio Innovation. The program is a gateway for startups to get incubated at IIT Mandi Catalyst.