Lauren Kieffer

A native of Illinois, Lauren grew up as a hunter/jumper rider competing on the local and 4H show circuit. She began eventing at the age of 12 and, by only 18, earned the opportunity to ride and work for U.S. Olympic gold medalists Karen and David O’Connor at their bases in Virginia and Florida. Her next step was becoming resident rider for Jacqueline Mars, a generous sponsor of the entire equestrian sport and eventing in particular. Lauren campaigns top horses in the program and helps bring along future stars.


  • World Equestrian Games 2018
  • Nations Cup Team Member 2018
  • Olympics 2016 






“We had a horse that arrived from Europe and was basically allergic to America. I had heard of Haygain and we when saw how it helped that horse, we realized its benefits for all our horses.”