slacklining “I thought I was going to throw up” – Colorado man slacklines between two hot air balloons The Vail athlete has a set a new world record, taking the sport to dizzying new heights A beginner's guide to slacklining – kick off your shoes and try it yourself Slacklining has officially gone from being a fringe summer activity beloved by hikers and climbers to a legitimate sport in its own right Advnture NewsletterAll the latest inspiration, tips and guides to help you plan your next Advnture!Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MOST READ1Garmin announces major software update and new accessories for your watch2Yellowstone Rangers catch tourist peering into Old Faithful, where water temperature at the vent is 204°F3What is scree – and how do you hike on it?4Utah ski resort honors 54-year-old lift ticket vouchers5New AI compass lets you "wander without getting lost"