Welcome to KaysFIT Academy

At KaysFIT Academy, we blend running, knowledge, and motivation to help you unlock your best self. Whether you’re setting marathon goals or building a stronger endurance mindset, we’ve got your back with a science-backed, experience-driven approach. Together, we help you reconstruct your health & running foundation and get you ready to go the distance. Ready to start? Let’s do this!

We’re also the proud organizers of some of India’s most exciting ultra races—OOTYULTRA, Bison Ultra, and the upcoming Madurai Ultra. These events aren’t just races; they’re journeys through breathtaking landscapes that challenge your limits and leave lasting memories. Join us, and let’s create an unforgettable experience together.

Cheers & Happy Running,


Coach Kay
High-Performance Endurance Coach, KaysFIT Academy
Founder & Race Director, OOTYULTRA, Bison Ultra & Madurai Ultra

Madurai Ultra Marathon, Combining Endurance With Nature and Cultrue

Madurai Ultra is a trail running event organized by KaysFIT Academy, set to debut on April 8, 2024, at Kadambavanam Resorts in North Madurai, India, offering various distance options for runners of all skill levels.

Inaugural Edition on 8-Dec-2024, Sunday

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OOTYULTRA Marathon, a tough race for everyone!

OOTYULTRA is a challenging ultramarathon road running event organized annually in Ooty, India since 2018 by KaysFIT Academy for runners of all levels from beginners to ultramarathon enthusiasts

8th Edition on 23-Mar-2025, Sunday

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Bison Ultra Marathon, An Exclusive Trail Run

Bison Ultra is a scenic trail ultramarathon organized by KaysFIT Academy, first held on February 9, 2020, in Yercaud, India, designed for trail running enthusiasts seeking challenging and immersive experiences in nature.

6th Edition on 8-Jun-2025, Sunday

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Registration starting on 1-Jan-2025

KaysFIT Academy: Elevating Endurance through Scientific, Evidence-Based Personalized Coaching

KaysFIT Academy, founded in 2016 by Kannan (Coach Kay) Sundararajan, combines years of experience with scientific, technology, and data-driven personalized training programs. Specializing in high-performance endurance coaching, the academy integrates sports science with holistic development for runners of all levels, from beginners to seasoned ultramarathoners. With the support of caring coaches and the RCF (Reconstruct the Foundation) framework, it enhances athletic performance while fostering mental resilience and personal growth through expert guidance and tailored coaching methodologies.

Achieve a massive Jump in your Personal & Professional Productivity

Adopt AI by KaysFIT Academy, led by Coach Kannan Sundararajan (Coach Kay), focuses on enhancing personal and professional productivity through tailored AI strategies and prompt engineering, empowering individuals and organizations to navigate the complexities of AI effectively.

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