October |
| ![foto](https://www.matacanex.com/images1038/img_20221112084001.jpg) FREE | Staff for Montemorelos Ultra Trail Oct 19 11:00 Free cabin and tours for Volunteers |
| ![foto](https://www.matacanex.com/images1038/img_20221112083812.jpg) $1,000 | Ultra Trail Montemorelos 45K 2023Oct 20 6:00 Este es un Ultra Trail unico por sus escenarios y retos. Recomendado para iniciar en este deporte. |
![foto](https://www.matacanex.com/images1038/img_20221112083851.jpg) $950 | Montemorelos Ultra Trail 26K 2023Oct 20 6:00 Este es un Ultra Trail unico por sus escenarios y retos. Recomendado para iniciar en este deporte. |
![foto](https://www.matacanex.com/images1038/img_20221112083931.jpg) $800 | Montemorelos Ultra Trail 12K 2023Oct 20 6:00 Este es un Ultra Trail unico por sus escenarios y retos. Recomendado para iniciar en este deporte. |
November |
| ![foto](https://www.matacanex.com/images1032/img_20221111151441.jpg) FREE | Oso Negro races volunteers Astro TrailNov 23 11:00 Volunteer on Santiago, Mexico 100k Mountain Ultra trail. |
![foto](https://www.matacanex.com/images1032/img_20221110213124.png) $850 | NIght run Astro Trail 25K 2024Nov 23 18:00 Ultra Astro run. 1200m+ 23k |
January |
| ![foto](https://www.matacanex.com/images1032/img_20221111151441.jpg) FREE | Oso Negro races volunteers 2025Ene 24 2025 18:00 Volunteer on Santiago, Mexico 100k Mountain Ultra trail. |
| ![foto](https://www.matacanex.com/images1032/logo_oso_itras50.jpg) $2,000 | Oso Negro Ultra Trail 50K 2025Ene 25 2025 6:00 Ultra Trail run 50K. 2880m+. ITRA 2. 50K M. |
![foto](https://www.matacanex.com/images1032/img_20221110221547.jpg) $2,500 | Ultra Trail Oso Negro 100K 2025Ene 25 2025 5:00 Santiago, Mexico 100k Mountain Ultra trail. 5 most beautiful waterfalls in the state. 5860m+. ITRA 5. Western States. 100K M. |
![foto](https://www.matacanex.com/images1032/img_20230204113458.jpg) $2,300 | Ultra Trail Oso Negro 75K 2025Ene 25 2025 5:00 Santiago, Mexico 75k Mountain Ultra trail. 4800m+. ITRA 4. 100K M. |
![foto](https://www.matacanex.com/images1032/logo_oso_itras30.jpg) $1,500 | TrailRun Oso Negro 30K 2025Ene 25 2025 6:00 Ultra Trail run 30K. 1600m+. ITRA 1. 20K M. |
April |
| ![foto](https://www.matacanex.com/images1006/img_20240209015825.png) FREE | Voluntarios Abr 19 2025 18:00 Voluntarios para asistencia a los corredores de todas las distancias en Galeana, NL. Aprendizaje y cabañas gratis. |
| ![foto](https://www.matacanex.com/images1006/img_20240309151936.png) $750 | Peyote Trail 26K v2Abr 20 2025 6:00 26 kilómetros de montaña pura, se cruzan 2 imponentes montañas y valles |