2 koşu (running) events in Istanbul, İstanbul

No Reason Co. has been running Istanbul's streets since 2013, long before running crews became a culture phenomenon in the city. Founded on the belief that you need no reason to run when it is simply part of who you are, No Reason Co. has grown into a genuine community of around 50 runners who show up for three weekly sessions. Sundays at Kuruçeşme, Tuesdays in Moda, Wednesdays on the track, they've turned the entire city into their playground. What started as runners who got it has evolved into something bigger, a crew that genuinely enjoys each other's company on and off the road.

Runarchy RC emerged in Istanbul in August 2017 as a revolt against the monotony of traditional running groups. Founded on the principle that running should feel free and honest, not rigid and exclusive, the crew built something genuinely different. Today, around 80 runners of all paces gather under the Galata Tower to experience the city together. Here, beginners are celebrated as much as experienced runners, and newcomers shape the crew's identity with each outing. Every Tuesday at 8pm, they explore one of 23 Istanbul routes regardless of weather. Sunday runs venture into the forests. Runarchy RC isn't just about miles, it's about reclaiming the streets.

Rundamental started running together in the heart of Istanbul in 2014, officially forming as a crew in 2015 around one shared conviction: good people run together. Founded by visionaries who saw running as a gateway to adventure, creativity, and genuine friendship, Rundamental has grown into a family of ambitious, creative people who train, travel, and hang out together. Every Tuesday and Sunday, they gather at Ayvat Bendi in Belgrade Forest, one of Istanbul's most storied green escapes, where each session feels like an adventure. For Rundamental, running is about pushing limits, inspiring each other, and supporting young athletes in a community defined by warmth, ambition, and deeply human connection.

Team Run.BO was born from serendipity. In March 2015, four strangers crossed paths at an Istanbul airport, all heading to the same trail race. That accidental meeting sparked a conversation that became a crew. Officially founded in June 2015, Team Run.BO operates on a simple belief: running produces stories, and stories motivate people to run. With around fifteen members, the crew stays deliberately small, accepting new runners who earn their place by showing up and running with the group. They're trail runners, storytellers, and people with running craziness. Every Sunday at 7 a.m., Team Run.BO gathers at Cekmekoy to explore Istanbul's trails while the city sleeps and the forest wakes.