Empire Mine State Park Trails.   Here’s a video that will give you a taste of the trails at Empire Mines State Park in Grass Valley, CA.  When I say “in” Grass Valley, that’s what I mean.  Empire Mines is a medium size park with about 12 miles of trails if you run every little bit of every trail, and it is inside the city limits of Grass Valley.  Best way to get there?  Go to Grass valley and ask anybody, “Where’s Empire Mines State Park?”
 
 

If you want to take another turn around the park, just click on this Empire Mine State Park link called Rain Gear,