Teddy Circuit Run with Inje Bear is a unique track marathon held at Inje Speedium, the only FIA international-standard racing circuit in Korea. It will take place on 2026-10-05 and is designed around the experience of running directly on the circuit. The event is hosted by Inje Development Office and organized by the Teddy Marathon Organizing Committee and YUL Company.

The event offers 5K and 10K courses, and the 10K is the official timed course consisting of two laps around the circuit. The 5K course is open to families and children, with stroller groups starting in staggered waves, and children under 6 may participate free of charge when accompanied by a guardian. Participants receive course-specific gifts, a finisher medal, and an official record photo service, and a free shuttle bus operates on race day between Inje Bus Terminal and Inje Speedium.