Kačina Run is a cross-country race held at Zámek Kačina in the Kutná Hora District of Central Bohemia. The event focuses on running within the castle park, with children's races in the morning and longer races in the afternoon. Adult participants can select short and middle distances, including 5 km and 10 km, and a half marathon is also offered. Some years feature a 5 km night race. The event is part of the Běhej Zámky Střední Čechy series, connecting races at various castles in Central Bohemia.
The race routes are contained within the Kačina estate, winding around the castle and through its extensive park via gravel paths, forest trails, and meadows. The 5 km race consists of one loop, the 10 km race uses two 5 km loops, and the half marathon comprises three 7 km loops. The primary adult courses are predominantly gravel with some forest path sections. The children's course is entirely on gravel. The participant field is diverse, including club runners, local residents, families, and individuals seeking an active day in the park; one previous event had over 600 participants.