Challenge Unlimited at Ironstone Farm, 450 Lowell St., Andover, Massachusetts 01810



To provide therapeutic, educational and recreational opportunities using horses and the working farm environment to help individuals achieve optimum quality of life.

Ironstone farm

Ironstone Farm was founded in 1960 by owner Richard Donovan as a breeding, training, and rehabilitative facility for thoroughbred performance horses.

The nonprofit Challenge Unlimited was created out of the Donovan family’s desire to share Ironstone Farm with people whose lives have been challenged by disability. Located more than 18 beautiful acres in Andover, Massachusetts, the property consists of pasture, woodland, ponds, and is home to about 30 horses, donkeys, and a variety of wildlife, making a visit to the farm a memorable experience for all ages. 

challenge unlimited, inc.

The nonprofit Challenge Unlimited, Inc. was established in 1983 and began providing programs for children of all abilities. In 2001, Challenge Unlimited took a bold step and purchased the farm to ensure these programs would continue long-term.

What we do

Today, Ironstone Farm uses the dynamic power of horseback riding and the environment of a farm to combine several therapies into one highly effective experience. Top doctors and medical institutions refer clients to Ironstone because of its success.

Children with special needs learn to walk. People who did not speak before - including those on the autism spectrum - begin speaking. Additional therapeutic programs improve the lives of others, including veterans who have experienced trauma, survivors of cancer, teens at risk, young adults with special needs who can benefit from learning life skills, and elders with memory issues.


Coming to the 18-acre horse farm, rather than an impersonal clinic, makes therapy a “want to” event rather than a “have to” session. About 200 volunteers each week come and support our therapeutic riding programs because they know their donated work changes lives.

Challenge Unlimited at Ironstone Farm encourages volunteer services for people of all abilities, bringing together a diverse population in a wholesome environment that encourages self-esteem, well-being and improved quality of life. 

Ironstone Farm also offers recreational riding six days a week, 12 months a year in indoor and outdoor riding areas.

Help Our Cause

Thank you for considering a donation to Challenge Unlimited at Ironstone Farm. There are a variety of ways you can contribute to our programs and initiatives. 

Ironstone Farm is home to two nonprofit organizations. Challenge Unlimited was incorporated as a 501(c)(3) in 1983 and Ironstone Therapy was incorporated in 1998. 

Pay with PayPal or a debit/credit card