Share this story Racers compete in the annual Slaughter Fest rafting and kayak races on Sunday, June 14, 2026, on the Roaring Fork River just outside of Aspen. Austin Colbert/The Aspen Times Slaughter Fest, the annual raft and kayak race that features the Roaring Fork River’s Class IV Slaughterhouse Falls, returned to Aspen on Sunday. With the river running lower than usual due to the low snowpack, the race began at Stein Park and ended at Slaughterhouse Falls.