The Bratislava Trail Run begins and ends at Malokarpatské Námestie in Bratislava-Lamač, situated at the edge of the Small Carpathians. Previously known as KarpatyRun, this event offers trail running for participants of all levels, featuring distances from 5 km to 50 km. A community focused on forest running has developed around this event since 2018. The available distances cater to beginners with a shorter off-road route, while also providing longer, mountain-style races for those undertaking serious training.
The courses are exclusively on trails. The shortest route includes approximately 80 m of elevation gain, and the longest listed route has about 876 m. The 30 km and 50 km races are eligible for the UTMB Index. The 50 km race is also part of the ITRA National League, holding Mountain Level 3 and Finisher Level 4 ratings. Participants must check in at least 45 minutes prior to their start time, collect their race number, and proceed to the start line located 700 m away, shortly before the race commences. Organizers describe it as Bratislava's largest trail running festival, attracting a diverse field of local Slovak runners alongside club and company teams from neighboring countries.