The contest is organized over 2 rounds: a written preliminary examination, Prelims, which takes place in numerous schools all over India in July (Online this year due to Pandemic) and Mains - which is conducted at IIT Guwahati, among the top 50 teams/students from each IX-X(Junior Squad) and XI-XII(Hauts Squad) class students.

Through a series of events involving mental aptitude, logic, and dexterity, Technothlon seeks to provide school students a platform to build fundamental experience and knowledge, to exercise co-ordination skills, and to think out of the box.

Its final round is conducted in IIT-Guwahati during Techniche,[3] the annual Techno-Management festival of IIT Guwahati.

It was this year which has witnessed a manifold increase in the reach of Technothlon 2009 with tie-up with nearly 1000 KV schools.

Moreover, Technothlon also reached another milestone at the National level with the tie up with nearly 600 Jawahar Navodaya Vidyalayas.

Dr. Udaya Kumar, the maker of the Rupee symbol graced the event as the chief guest and also as a judge for "Final Showdown", Hauts during Techniche.

During Mains, the participants were introduced to the very new and mystical world of Astronomy by the renowned Kepler Mission Manager at NASA Ames Research Center, Roger Hunter.

Dr. Gautam Barua, Former Director (2003–2013), IIT Guwahati motivated the participants during the crucial nerve-racking hours of Final Showdown, Hauts.

Technothlon also launched its own initiative - LED (Learn Experience Discover) - which involved the Technothlon organizers reaching out to the under-privileged students and demonstrating small science experiments, thus taking a step in introducing scientific temperament in the children.

The top 50 teams, who made it to IIT Guwahati for the Mains got an amazing opportunity to interact with Christer Fuglesang, Swedish physicist and ESA Astronaut, during which he shared with the participants the dazzling experiences of the space.

Technothlon 2015 got even bigger and better, thanks to tie up with Kendriya Vidyalayas & Jawahar Navodaya Vidyalayas, bringing in huge participation, and which helped widening the reach quite remote places of the country (E.g. Naxalite affected Dantewada, Chhattisgarh) bringing in participation of 12,000 students from these KVs and JNVs.

During the Mains, the participants interacted with Claude Nicollier, Swiss ESA and Professor at EPFL.

This was always possible when the finalists(the top 50 of both the squads) could visit IITG campus and experience Technothlon in all of its glory.

But with Mains being held online, they came up with the amazing event of ‘Campus La Vie’ so that the finalists have a chance to experience our lives in IIT Guwahati, albeit virtually.

And in order to keep the spirit of competition alive, two multiplayer events- Marauders Chess and Stratego were created, with some very complex rules which brought out the ‘Mastermind’ in every student.

Participating schools can collect the registration fees themselves and then prepare a demand draft to be handed over to the city representatives.

It involves no syllabus or general knowledge requirement and relies solely on the student's logical and analytic thinking abilities.

Mains is conducted during "Techniche", the Techno-Management Festival of IIT Guwahati, held during the first week of September.

Other than events, the students can witness the competitions of Techniche, attend the Lecture Series of famous personalities and watch laser shows and Nite performances.