Mount Talinis, also known as the Cuernos de Negros (Horns of Negros), is a complex volcano in the Philippine province of Negros Oriental. At about 1,903 metres (6,243 ft) above sea level, it is the second highest mountain on Negros Island after Mount Kanlaon. Cuernos de Negros is classified as a potentially active volcano. The mountain range is very fumarolic with several solfataras and steam vents located on its slope that are harnessed to generate electricity. The region of Mt. Talinis has a rich biodiversity, and its forest system is home to endemic and rare wildlife.

The Mt. Talinis Mountain Marathon will be on October 20, 2018 at the Municipality of Valencia, Negros Oriental. This is in conjuction with the celebration of the Buglasan Festival in Negros Oriental, Philippines.

This is the first mountain marathon in the region.