Ralf Kerkeling is a freelance journalist and storyteller based in Cologne, Germany, specializing in sport, outdoor, and sustainability topics. He began his journalism career after working in the music and TV industries, and today produces well‑researched content for B2B and B2C print and online media, companies, and editorial projects. Kerkeling has served as editor‑in‑chief for titles such as sportFACHHANDEL and aktivLaufen/Leichtathletik, and writes about circular economy, sustainability, and outdoor trends. He is also a podcast host for shows like Made in Green and Green Vision and regularly moderates panels and conferences in the sports and outdoor sector.