The history of CrossFit Serdika begins well before the up-to-date gym in the heart of Sofia. It starts with a number of long-standing friendships and the love, the grit and the passion for sport.

In 2008 Nikolay Atanasov (Koko) returned from Sweden, impressed by the functional training called CrossFit. He managed to spark the interest of his friend from the schoolyard Alexander Zahariev (Sasho) and both started to train literally on the carpet at Sasho’s apartment. Later on Roman Atanasov – Koko’s brother joined. The three became certified CrossFit Level 1 and then Level 2 coaches. They started with an experimental gym at a school facility.

For a couple of years, the experience became so successful and the community grew so big that the scale needed to be upgraded. So, the three friends were joined by the experienced alpine ski racer Nikolay Jordanov who is the founder of HELL SPORT sports club, mainly focused on condition and power training. For several years he also managed to build a cohesive club community.

This is our story, in short. Because the years of friendship and the numerous WODs we have done together cannot be described in a few sentences.

Today, CrossFit Serdika is the only certified CrossFit gym located in the center of Sofia, and there, you will find four certified Level 2 coaches.

Nikolay 'Koko'
  • CrossFit Level 2 Trainer (CF-L2)

  • Advance Gymnastics Certificate (2014)

  • Endurance Trainer (2010)

  • Advance Gymnastics Certificate (2014)

  • Kettlebell Certificate (2011)

  • Kids Trainer (2012)

  • Mobility Certificate (2011)

  • CrossFit Level 2 Trainer (CF-L2)

  • CrossFit Aerobic Capacity

  • CrossFit Master Specialty Course

  • Free+Style Gymnastics seminar

  • CrossFit Fittest in Bulgaria (2015)

  • CrossFit Level 2 Trainer (CF-L2)

  • Kids Trainer (2019)

  • CrossFit Master Specialty Course

  • CrossFit Level 1 Trainer (CF-L1)


  • Suples Training Systems (Bulgarian bag) Level 2


  • HIIT

  • Scaling Certificate

  • CrossFit Judges Online Course

The Community of CrossFit Serdika is our way to show people, and ourselves, that to challenge yourself every day makes you better. No matter if you’ve been able to achieve the desired result and no matter if it refers to the gym or to life outside it.

We believe that every person is unique so we don‘t put all people in the same boat. From the first steps in CrossFit to complete workouts, we adapt your programme to support you and to challenge you in achieving your goals.

At CrossFit Serdika you will discover the passion for this sport. With regular training, you will be in good shape and look great, but your most precious acquisition will be our community – a brand new universe of friendships. And the gym is just the starting point of this universe.

Join our community now!