Now accepting a limited
number of new clients
Whitethorne is an exquisite, mature, full care
equestrian facility built on the magnificent
Whitethorne Estate in Somis, California.
With easy access from the 23, 118 and 101
freeways, Whitethorne is nestled amongst citrus
and avocado groves, offering a quiet, peaceful
location away from traffic noise and with
outstanding facilities for over 100 horses.
Whitethorne offers two large jumping arenas
with Newcourse jumps, permanent water jumps
and liverpools. An FEI standard dressage court,
a longeing arena, flood lighting, round pen, hot
walker, on site trails, multiple large turnouts
and green pastures where the grass is main-
tained year round.
Georgy Maskrey-Segesman and Julia Spreen
Balcom, both of whom have competed at World
Cup qualifier level, together with three assistant
trainers provide hunter, jumper and equitation
training. Debbie Knopfler, a USDF Gold, Silver
and Bronze Medal Winner and USDF Certified
Instructor, is Whitethorne’s dressage trainer. All of
these trainers provide customized training for all
levels from beginner to Grand Prix level. They
also provide equine nutrition programs and
arrange training clinics on site with internationally
recognized riders, course designers and trainers.
5501 Balcom Canyon Road, Somis, CA 93066 (818) 618 - 9949
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