XiShi 100∣Ultra Trail In The DongBai Mountain 2026

Presentation

The XiShi 100 Ultra Trail In The DongBai Mountain is a premier endurance event in the ultrarunning calendar, taking place in the scenic region of Zhuji, China. Set against the backdrop of the majestic DongBai Mountain, this exciting trail running race is designed for seasoned ultra-athletes and newcomers alike. The event features a breathtaking landscape characterized by rugged mountain peaks, dense forests, and picturesque valleys, making it a true test of endurance and adventure.

Part of the renowned UTMB series, the XiShi 100 is recognized by the International Trail Running Association (ITRA), boasting valuable points that contribute to the UTMB Index. The race, which has been steadily gaining popularity since its inception, invites avid trail runners from all over to challenge themselves on January 3rd, 2026, and showcases the region's rich cultural heritage alongside its natural beauty.

Courses and formats

Ultra Trail (75.34km)

The main distance of the event is 75.34 km with a challenging elevation gain of 4861 meters. Participants can expect a demanding terrain that combines rocky paths and steep ascents, requiring both stamina and strategic pacing. Key passages include technical sections that vary from single-track trails to open alpine meadows. With multiple aid stations placed strategically along the route, participants can refuel and hydrate while tending to their gear as needed. The cutoff times for the 75.34 km course ensure that runners stay within a manageable pace, introducing a healthy competitive spirit among athletes.

Ultra Trail (45.2km)

For those who seek an alternative to the longer distance, the 45.2 km format offers its own unique set of challenges while still featuring significant elevation gain and a varied landscape. Runners will encounter both technical single-tracks and flowing trails, making it suitable for runners looking to experience the essence of trail running without the grueling mileage of the ultra distance.

Ultra Trail (30.14km)

This mid-range format bridges the gap for those transitioning to longer distances. The 30.14 km route still features notable elevation and essential aid stations ensuring every runner enjoys hydration and sustenance throughout their journey. Ideal for moderate to experienced trail runners, this course allows athletes to appreciate the course's natural beauty while facing alluring challenges.

Ultra Trail (15km)

Newcomers to trail running will find the 15 km format a perfect introduction to the sport. This relatively shorter distance provides the opportunity to experience the excitement of the event while enjoying the gorgeous surroundings. The gentle ascent eases athletes into the thrilling world of ultra-running.

Terrain and difficulty

The terrain of the XiShi 100 is primarily characterized by rocky paths, forested trails, and steep climbs, integrating both technical and non-technical sections. Runners should be prepared for a dynamic course with varying terrain, which may include stretches of single-track paths and open land at higher altitudes. Typically, the weather in early January may be cold and variable, so participants are advised to check forecasts leading up to the event.

With a minimum altitude around 200 meters and a maximum elevation that approaches 2000 meters, the diverse altitudes contribute not only to the stunning views but also to the physical challenge presented. This event requires solid training and preparation, particularly in altitude acclimatization and technical trail running, to effectively tackle the inherent difficulties of the course.

History and notable results

The XiShi 100 has carved a niche for itself within the ultra trail circuit since its establishment. With each successive edition, it has garnered attention, drawing elite athletes and local trail running enthusiasts. While specific records and notable results are yet to be deeply documented, the event promises that aspiring champions will contest for course records and personal bests.

Noteworthy participants have included local trail runners who have made their mark nationally, showcasing the potential talent emerging from the region. The course records, however, will be an exciting aspect for runners to aim for in the upcoming editions of the race.

Practical info for participants

• Mandatory gear: Runners must comply with the specified gear list, which may include hydration packs, nutrition packs, specific footwear, and weather-appropriate clothing.
• Qualifications: Participants are advised to meet specific performance qualifications, particularly for the longer distances, which may include completion of previous ultras within designated cutoff times.
• Drop bag logistics: Runners will have designated drop bag locations at several aid stations, allowing them to access personal gear and supplies throughout their race.
• Access/accommodation: Provisions for accommodation in and around Zhuji are recommendable for out-of-town participants, ensuring they can rest and prepare effectively before race day.