Borský kros is a 10 km cross-country trail race held in Machov, a village within the Náchod District of the Královéhradecký Region. The primary race, also known as the Desítka, begins at the Doleček running-track area. Registration opens in the morning, with the main race commencing later in the day.
The course crosses field, forest, and meadow paths, offering a true trail running experience distinct from a road 10K. The main route passes through Bor and features approximately 200 metres of elevation gain. Organized by Borský klub lyžařů Machov z.s., the modest entry fee contributes to its atmosphere as a local club event catering to both regular participants and more competitive runners.