Trail Race Location - The Forge: Lemont Quarries: We will be headed to a really unique place, the Forge: Lemont Quarries! A great location out in the Southwest Suburbs (close to our Palos Trail location), with unique trails and breathtaking scenery which are all part of a new outdoor adventure park called The Forge: Lemont Quarries. The planned five mile running course will be a flatter off road course with crushed limestone and some rocks & roots to run over. A nice blend of dirt and single track will surely satisfy all levels of trail runners (see course map below)! Come out and run in our brand new USOLE Trail Challenge location, The Forge: Lemont Quarries! - Click to find out more!