The main reason to use trail running shoes on a treadmill is to save money. Shoes can be costly, and buying a pair just for treadmill running is likely unnecessary.
Just think of what treadmill running is. It is, at its core, a form of running without much resistance and with minimal friction.
Additionally, a treadmill won’t wear down the tread on the bottom of your shoes. At least not like gravel-covered bridal trails will.
For instance, trails can be unforgiving and rough, while treadmills are smooth surfaces that literally bounce with each step.
In fact, treadmill running will actually abuse your trail shoes less than running trails.
So, if you are standing at the gym right now wondering whether stepping on the treadmill will kill your Salomon Speedcross Shoes (Link to Amazon), you can relax. It won’t.