The Hartenbos MTB & Trail Run Challenge is an annual sporting event held in the town of Hartenbos, located in the Western Cape province of South Africa. The event is open to both amateur and professional athletes and offers two main categories: mountain biking and trail running.

The mountain biking category features a variety of technical and challenging terrains, including steep inclines, rocky descents, and river crossings. The route covers a distance of 50km and has an elevation gain of approximately 1000 meters. There is also a shorter distance of 20km for less experienced riders.

The trail running category also offers two distances, 5km and 15km, with the latter covering a technical terrain that includes steep climbs, forest trails, and river crossings. The trail run route is designed to offer a challenging experience for runners, with the stunning natural scenery of the Western Cape serving as a backdrop.