LLANGANATES, Ecuador (AP) — The tiny rider sat — well, was tied — atop the towering steed that would carry him to victory in the annual llama races at Ecuador's Llanganates National Park.

Wellington Barrera, clad in a wool poncho, sheep-leather pants and a cowboy hat, was the only finisher in his under-3 category, bouncing 500 meters (1,640 feet) to victory.

But two dozen children in other age groups also competed Saturday in an annual event meant to draw attention to the park's high wetlands and the need to preserve them.

The park, roughly 125 kilometers (80 miles) east of Quito, is famed for...