Daniel Klarkowski is a running influencer, content creator, and editor-in-chief of Sports Insider, one of Germany's largest running and endurance portals. With his passion for running, fitness, and the international sports scene, he reaches thousands of runners daily through digital content, social media, and editorial formats. As the founder of Sports Insider, Daniel reports on the latest trends in the running and sports industry – from marathon and trail running to recovery and nutrition, as well as innovative sports technologies and international events. His focus is on presenting sports topics in an authentic, modern, and relatable way, while simultaneously building a bridge between the community, brands, and the sports industry. Through his work as a journalist, presenter, and influencer, Daniel regularly travels to international sporting events and collaborates with leading brands in the running, fitness, and outdoor sectors. Authentic storytelling and the connection between athletic performance, community, and digital content are particularly important to him. With experience from nearly 200 running events and more than 40 completed marathons worldwide, Daniel Klarkowski has created a platform that inspires both ambitious athletes and sports enthusiasts new to running – and has established himself as a key figure within the German running community. Among his greatest achievements are the successful completion of the World Marathon Majors series, the six largest marathons in the world, participation in the 2025 European Running Championships, and his participation in this year's World Athletics Road Running Championships.
