Little Britches Therapeutic Riding in Roxbury will present a 40th anniversary horse show Oct. 5 from 10 a.m. to 3 p.m. in Washington.

The show, which has a rain date of Oct. 6, will feature riders taking part in an obstacle course, as well as a dressage demonstration by the most advanced riders, at Steep Rock Preserve, 2 Tunnel Road.

The accomplishments of the organization’s riders will be showcased at the inaugural event made possible by funds provided by the Olde Crabs Hockey Club.

More than 40 riders will demonstrate the confidence and skills they’ve gained through Little Britches’ therapeutic riding program.

Other highlights will include speakers, children’s activities and a ribbon presentation.

Founded in 1979 by Peg Sweeney and Betty Lou McColgin, Little Britches aims to change the lives of people with disabilities using the movement of the horse.