The Mon River Trail is a rail trail located in West Virginia, United States.
The trail is composed of two separate sections - the north section and the south section, which are connected by the Caperton Trail.
It is relatively flat and follows the Monongahela River in a wooded valley.
Together with the Caperton Trail and Deckers Creek Trail, it forms a 48miles network of multi-use, non-motorized use, trails connecting Marion County, Monongalia County and Preston County.