Voted the Best Zipline Tour in the Rockies, the Cliffside Zipline in Idaho Springs is just 30 minutes from Denver and 1 hour from Summit County, Boulder and Winter Park. You’ll find big mountain views for miles, a beautiful short hike, and exciting drops with zooming lines through the treetops. You’ll start at our Idaho Springs Outpost, where you’ll check in, receive your zipline gear and get the zipline safety rundown. We then drive you most of the way up the mountainside of our 9-acre property. You’ll get to the very top with a 10-minute hike to platform #1. All of our platforms – #1 through #6 – are built into natural cliffs and treetops. We are not the zipline course right on the interstate! Although our Outpost is conveniently just 1/4 mile from I-70, you feel a world away with the undeveloped mountain forest and big drops where our zipline tours take place.