Christina Christensen has ridden, trained, and shown in the United States, Belgium, and England. She has competed at FEI levels in both Show Jumpers and Dressage and continues to welcome clients from both disciplines.


  • As an apprentice, she has worked for some of the top riders and trainers in the world, including David Pincus of the Spanish Riding School, and Ludo Phillippaerts of Belgium's Olympic show jumping team.

  • As a rider, she has given her horses the correct foundation needed to reach their peak potential, using both her riding and in-hand knowledge to help them excel. Her experience spans across all levels of a horses' development: either in their early stages of training, all the way up to seasoned Grand Prix competitors!

  • As a trainer, she has worked with countless clients to improve their riding and enhance communication with their horses, helping them develop at home, compete nationally, or obtain their USDF medals.

Our Team

Jenna Cornell Nichols

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Jenna has been riding for over 15 years and has competed in hunters, jumpers, equitation and dressage. She started riding at age 10 and her passion for horses has only grown since then.  

She started riding competitively and training heavily at age 16 working on a private property in Woodside with several horses.  She competed for Arizona State University on the IHSA Hunter/Equitation riding team at Crossroads Farm in Gilbert, AZ during her time at the university.  

​Jenna has been training at Core Equestrian for thirteen years both riding and teaching lessons to beginner and intermediate riders.

Christina Christensen

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Christina is also a certified Instructor of the British Horse Society and the Certified Horseman's Association. She continues her riding and in-hand education with the help of several clinicians, including international trainers Manolo and Jose Mendez, and Alfredo Hernandez.

Marcela Lupo Alasmar Ruhd














Marcela has been riding since her childhood in Brazil.

She competed in Show Jumping (up to 1.30m) and Dressage (PSG) and has specialized in training and developing young horses.  Marcela has extensive experience cross training in a variety of disciplines, including eventing, driving, ground work, and of course, dressage and show jumping. Her vast array of knowledge has allowed her to help strengthen the foundation of the horses that she works with, no matter their background. Her attention to detail and her love for her horses has made her an integral part of the Core team.