Alex Honnold‘s free solo style isn’t just about precision, it’s about climbing fast.

The Half Dome and Moonlight Buttress are two of the toughest climbs on Earth, but that didn’t stop Alex Honnold from conquering them in record time and without a rope. He completed the Moonlight Buttress in Zion National Park in 90 minutes and Half Dome in Yosemite in just 82 minutes. The Moonlight Buttress is said to be one of the longest and hardest sandstone climbs on Earth, even with a rope. Additionally, Half Dome has never been climbed free-solo. Honnold managed to accomplish both in record time.

From the Nose of El Capitan in less than two-and-a-half hours to Monkey Finger in just over an hour, Honnold holds an impressive collection of speed records on America’s most inspiring peaks. It probably makes sense that Honnold now has a watch company in his bag of sponsors. Although spotters generally keep time during officially-timed climbs, it’s just Honnold, a bag of chalk and a time piece when he’s practicing.

Be sure to check out our feature on rock climbing terms to brush up on your climbing lingo before taking a look at the best free-solo climbers of all time.