Before getting on the wall in the final round of a paraclimbing competition, 17-year-old Raveena Alli, a climber who's blind, usually has six minutes to preview the top rope route with her caller, Fernando Vásquez. He tells her how it'll feel — easy, pumpy, familiar, unfamiliar — and how it'll flow. He talks her through the resting spots and the cruxes — the hardest moves.

When Alli starts climbing, Vásquez gives her the direction, distance, and shape of the next hold through Bluetooth headsets , referencing a clock face and everyday objects: "12 o'clock, close, muffin." Vásquez never rushes his calls, matching his tone to Alli's intentional movement. As she climbs, she engages her biceps to find control, adjusts her feet to find balance, and pushes off from her legs to find power.

She loves it when these moves feel natural, but she also likes it when they don't. In training, Alli will fall on a tricky move a few times before Vásquez gives her more direction. "He's big into — which I like — having me attempt it, having me fall, because that's when you really learn most about how your body will respond to your movements," Alli says.

"I would've quit a long time ago if I had just always gone to the top, because that's kind of boring." As a member of the Atlanta, Georgia chapter of Team Catalyst, Alli has competed in adaptive climbing both nationally and internationally, moving to the adult field in 2022. She placed third in her international debut at the 2022 .