Mountain bike races are competitive events where cyclists ride off-road on specially designed bicycles. These races can take place on various terrains, including trails, hills, and forests, and often feature obstacles like rocks and roots. Participants are timed, and the goal is to complete the course in the shortest time possible. There are different types of mountain bike races, such as cross-country, downhill, and enduro. Each type has its own rules and challenges. Cross-country races focus on endurance and speed, while downhill races emphasize technical skills and speed on steep descents. Enduro races combine elements of both, with timed downhill sections and untimed climbs.