EditorialVinny Marciano, a one-time high-school swimming phenom, trains on a bouldering wall at his parents’ home in Randolph, N.J., July 7, 2021. (Christopher Gregory-Rivera/The New York Times)
EditorialVinny Marciano, a one-time high-school swimming phenom, trains on a bouldering wall at his parents’ home in Randolph, N.J., July 7, 2021. (Christopher Gregory-Rivera/The New York Times)
EditorialAdam Ondra of the Czech Republic, competes in the bouldering portion of the men's sport climbing final at the postponed 2020 Tokyo Olympics in Tokyo on Thursday, Aug. 5, 2021. (Chang W. Lee/The New York Times)
EditorialAdam Ondra of the Czech Republic, competes in the bouldering portion of the men's sport climbing final at the postponed 2020 Tokyo Olympics in Tokyo on Thursday, Aug. 5, 2021. (Chang W. Lee/The New York Times)
EditorialAthletes take part in the second of three stages, the bouldering discipline, of the men's combined sport climbing competition at Aomi Urban Sports Park in Tokyo on Tuesday, Aug. 3, 2021. (James Hill/The New York Times)
EditorialAdam Ondra, left, competes in the bouldering event at the 2019 International Federation of Sport Climbing World Championships in Hachioji, Japan, Aug. 19, 2019. (Chang W. Lee/The New York Times)